- Home
- Create A Castle BuildMaster Indoor Activity Starter Kit Bundle 2.4 lb
Create A Castle BuildMaster Indoor Activity Starter Kit Bundle 2.4 lb
- Free over $100
- 30-day returns
- Secure checkout
- Human support
Ask about this product
Real answers about fit, safety, shipping & more — powered by Mia.
Mia is an AI assistant. For order-specific help she'll connect you to our team.
In stock
Building your registry?
See all registry picks- Free U.S. shipping over $100
- 30-day easy returns, not the right fit? Send it back.
- Secure checkout, encrypted payment, buyer protected
- Real human support, U.S. based, replies fast
- Moogco Purchase Protection, free with your order. Damaged, not as described, or lost on the way? We refund it. How it works
Owned by a small family MoogCo Baby is a family-owned shop. Every order supports a real family who personally stands behind what we sell — thank you for shopping small. 💚
Create A Castle BuildMaster Indoor Activity Starter Kit Bundle is an indoor sand and mold play set for ages 6 and up. The kit includes 2.4 lbs of proprietary CastleMagic sand, 5 custom molds, storage bags that prevent drying, toppers, tools, a play mat and a storage case. Based on award winning 2020 Toy Of The Year outdoor technology.
Key Features
- Includes 2.4 lbs of proprietary CastleMagic sand
- Five custom molds to build an entire kingdom
- Includes one large tower topper and four small toppers
- Includes two locking keys and five dimension forming tops
- Pack and design tool plus play mat and storage case included
- Storage bags included to prevent sand from drying out
- Indoor activity starter kit based on 2020 Toy Of The Year technology
- For ages 6 and up
Details
- Brand: Create A Castle
- Product: BuildMaster Indoor Activity Starter Kit Bundle
- Sand: 2.4 lbs of CastleMagic sand
- Molds: 5 custom molds
- Toppers: 1 large tower topper, 4 small tower toppers
- Keys and Tops: 2 locking keys, 5 dimension forming tops
- Tools and Accessories: Pack & design tool, play mat, storage case
- Storage: Storage bags for sand when finished to prevent drying
- Technology: Proprietary sand compound based on award winning 2020 Toy Of The Year outdoor technology
- Age: For ages 6 and up
- Contents: 5 custom molds; 2.4 lbs CastleMagic sand; 2 locking keys; 5 dimension forming tops; pack & design tool; storage bags; 1 large tower topper; 4 small tower toppers; play mat; storage case
How to Use and Care
- Play for minutes or hours from the comfort of your home
- When finished, place sand in included pouches to prevent drying
- Watch video tutorials for tips on molding and sculpting with the proprietary sand
Who It Is For
For children ages 6 and up and families who want indoor sand sculpting. Suitable for home play and creative indoor activity.
Frequently Asked Questions
What age is this kit for?
The kit is for ages 6 and up.
How much sand comes in the kit?
The kit includes 2.4 lbs of CastleMagic sand.
Does the sand dry out?
The kit includes storage bags that prevent the proprietary sand compound from drying out.
What is included in the bundle?
Contents list: 5 custom molds, 2.4 lbs CastleMagic sand, 2 locking keys, 5 dimension forming tops, pack & design tool, storage bags, 1 large tower topper, 4 small tower toppers, play mat, and storage case.
Is there help to learn how to build castles?
Video tutorials are available for tips on how to mold and sculpt using the proprietary sand and snow.
All orders are processed and shipped within a maximum of 2 to 5 business days. Please note that this is an estimated timeline and does not constitute a guarantee, as national holidays and other external factors may impact final delivery and shipping times.
🚚 Free Shipping and Discount Clarification
For qualifying orders of $100 or more, the maximum available discount applied to your order is $30.


The proprietary CastleMagic sand holds shape for fine architectural detail while staying soft and squeezable. Return it to the included storage pouches and it will not dry out between sessions.

Five custom molds and locking keys guide kids to build towers, walls, and toppers quickly. Follow the molds or freeform sculpt for short or extended creative play.

Interlocking walls, dimension forming tops, and toppers assemble into full fortresses that stay put during play. Use the pack and design tool to shape terrain and add finishing touches.
Match the kit to your child's age, the space you have, and how much hands-on shaping they enjoy.
- Age and Ability: This kit is recommended for ages 6 and up. Younger children can join with close supervision and shared play.
- Playtime Goals: If you want quick builds, look for fewer molds. For longer creative sessions, choose sets with multiple molds and extra compound.
- Surface and Cleanup: Play on the included mat or a washable surface. Keep a small brush or damp cloth handy for quick tidy ups.
- Storage and Longevity: Return the compound to the reusable pouches after play. Kept sealed, the compound stays usable for repeated builds.
- Gift Considerations: Starter kits are great for trying the medium. Pair with extra sand or sets if you want longer or group play.
What age is this kit for?
Recommended for ages 6 and up. Younger children should be supervised during play.
Will this make a mess?
Not usually. The compound is low-tracking, and the kit includes a play mat and storage bags to limit residue.
How do I store the sand so it does not dry out?
Return the compound to the included sealed pouches after play. Stored this way, the sand will not dry out between uses.
What are your shipping and return policies?
We ship from a US warehouse. Orders over $100 qualify for free US shipping, and we accept returns within 30 days. Human customer support is available if you need help.
What if a mold or piece is lost or damaged?
Contact our customer support for help. We ship from a US warehouse and can advise on replacements or next steps.
You Might Also Like
Recently viewed products
Best Sellers
MoogCoSilverCups
MOOGCO Silver Nursing Cups 925k Silver - Protect Against Sore Breasts And Nipple Irritation
MoogCoSilverCups
The Original Silver Nursing Cups with Silicone Pads
Swaddelini
Swaddelini Grey Swaddle Sleep Sack 3D Knit Seamless Wearable
Costway
Wooden Rocking Climbing Arch with Cushion 3-in-1 Montessori Kids Climber Rocker
Swaddelini
Swaddelini Lavender Swaddle Sleep Sack 3D knit lightweight
Swaddelini
Swaddelini Pink Swaddle Sleep Sack 3D Knit Seamless
MoogCoSilverCups
MOOGCO Silver Nursing Cups 999k Silver
Costway
76.8 Inch Baby Bed Rail with Double Safety Child Lock-Gray
Sunflower Motherhood
Sunflower Motherhood Morning Sickness Box nausea relief gift set
Swaddelini
Swaddelini Bamboo Blend Beige Swaddle Sleep Sack 3D-knit
Little Martin's Drawer
Little Martin's Portable Fetal Doppler USB Rechargeable LCD
Swaddelini
Swaddelini Blue Swaddle Sleep Sack 3D Knit Seamless
Wendy Anne
Wendy Anne Organic Cotton Futon Pad Rectangle Custom Size
Dingle Dangle Baby
Dingle Dangle Baby Diaper Changing Distractor Head-Worn Mobile
Seven Lantern Lane
Seven Lantern Lane First Birthday Golf Bubble Pink Gingham Reversible
Costway
Kids Outdoor Sandbox with Oxford Cover and 4 Corner Seats
Sunflower Motherhood
Sunflower Motherhood Deluxe Postpartum Recovery Box full-size kit
Costway
6 Pieces Foam Climbing Blocks for Kids with Slide and Tunnel
momjug
momjug breastfeeding water bottle 50oz double-wall stainless steel
MoogCoSilverCups
MOOGCO Silver Nursing Cups 925k Silver
Dreamland Baby
Dreamland Baby Dream Weighted Sleep Sack 1.0 TOG 68-73°F
Natural Baby Gift
Premium Wood Mobile Arm for Crib, Boho Nursery Decor, Handcrafted Wooden Baby Mobile Holder, Universal Clamping Mobile Hanger, Neutral Nursery
Wendy Anne
Wendy Anne Bassinet Cradle Fitted Sheet 31.5 x 17.3 x 1.2 - Organic Cotton Gauze
Little Martin's Drawer
Little Martin's Drawer SpringBud FD-200B Fetal Doppler FDA Cleared
New at MoogcoBaby
JuneBee Baby Artisan Clothing
Eden Baby Booties - In Stock
JuneBee Baby Artisan Clothing
Mushroom Leg Warmers - In Stock
JuneBee Baby Artisan Clothing
Elsa Mittens
JuneBee Baby Artisan Clothing
Popcorn Pixie Hat - In Stock
JuneBee Baby Artisan Clothing
Lace Knit Cardi with Ruffles
JuneBee Baby Artisan Clothing
Hazel Jumpsuit - In Stock
JuneBee Baby Artisan Clothing
Milan Playsuit - In Stock
JuneBee Baby Artisan Clothing
Juliet Suspenders - In Stock
JuneBee Baby Artisan Clothing
Popcorn Knit Mittens
JuneBee Baby Artisan Clothing
Fairy Tale Baby Cardigan
JuneBee Baby Artisan Clothing
Cable Knit Cardi with Pearl Buttons
JuneBee Baby Artisan Clothing
Popcorn Knit Leg Warmers - In Stock
JuneBee Baby Artisan Clothing
Honeycomb Cardigan - In Stock
JuneBee Baby Artisan Clothing
Rainbow Dress - In Stock
JuneBee Baby Artisan Clothing
Lucy Playsuit - In Stock
JuneBee Baby Artisan Clothing
Paris Sweater - In Stock
JuneBee Baby Artisan Clothing
Mabel Dress- In Stock
JuneBee Baby Artisan Clothing
Sydney Romper - In Stock
JuneBee Baby Artisan Clothing
Mini Fashionista Romper - In Stock
JuneBee Baby Artisan Clothing
Adele Cardigan - In Stock
JuneBee Baby Artisan Clothing
Grace Dress - In Stock
JuneBee Baby Artisan Clothing
Henley Suspender Pants - In Stock
JuneBee Baby Artisan Clothing
Elsa Skirt - In Stock
G 5.0 on Google · 9 reviews · Verified buyer reviews from our store
"We got floaties for our toddler and they are great! She loves swimming and these are so nice to have. Company is owned by a husband and wife and they are kind and…"
"I purchased a bat costume for my daughter with Moogco and we absolutely loved it! We used it for our daughters first Santa photos. They are a small business worth…"
"Ordered from here and they sent my items fast! Great quality!"
"High quality toys. Customer service is helpful and responsive. Will buy from this store again!"
"All of my dealings with them have been great!"
"Wonderful company to work with! Great product"
"great prices and fast shipping!"
"Wonderful products"
"I was lucky to find this pad for my grandson’s bassinet. I like how it is all natural snd organic. Just make sure to buy it a little bigger because it shrinks after washing. Also give ample time…"
"These helped at first but it seemed like the edges dug into my skin making it irritated (might have needed the larger ones). Once my milk came in more, milk would spill everywhere. I found that milk…"
"Perfect. Great price and my little one very opposed to training has only had accidents in the last week. My daughter is 2yrs old, 27 lbs and the Medium is perfect. She has room in them but the arent…"
"Initially, I was skeptical of using it, but when my doc referred it to me for my cracked nipple, it worked like a charm. I did not want to put any balm or lotion over my nipple as I did not wanted…"
"Amazing tool for breastfeeding! These protect sensitive, chapped or cracked nipples like little shields. No more sticking to clothing/bras and wincing when anything bumps into my chest. I've been…"
"I cant belive they heal hours within you put them on. Totally a must while breastfeeding. Such a good quality"
"I used these for the first four weeks after baby came. It was during that phase where baby was so small he didn’t have a great latch and so I was getting sore nipples. This was great for protecting…"
"Only paci my breast feed three week old has accepted so far🙌🏼"
"Worked great and would definitely use again. The only thing is sizing can be tricky. I would’ve gotten a size bigger and I’d consider my size to be on the smaller side. If you’re not sure, just size…"
"I wore these for the first two months and they truly saved my breastfeeding journey - worked exactly how I expected. They gave instant relief. I basically wore them day and night for the first 6…"
"Love these , I bought due to damage from pumping . One week with creams and balms didn’t do much but two days with these and I’m almost healed !"
"LIFE. SAVER. Bought this the first week I started nursing my son and had the WORST cracked nipples. These solved the issues OVERNIGHT!"
"I was lucky to find this pad for my grandson’s bassinet. I like how it is all natural snd organic. Just make sure to buy it a little bigger because it shrinks after washing. Also give ample time…"
"These helped at first but it seemed like the edges dug into my skin making it irritated (might have needed the larger ones). Once my milk came in more, milk would spill everywhere. I found that milk…"
"Perfect. Great price and my little one very opposed to training has only had accidents in the last week. My daughter is 2yrs old, 27 lbs and the Medium is perfect. She has room in them but the arent…"
"Initially, I was skeptical of using it, but when my doc referred it to me for my cracked nipple, it worked like a charm. I did not want to put any balm or lotion over my nipple as I did not wanted…"
"Amazing tool for breastfeeding! These protect sensitive, chapped or cracked nipples like little shields. No more sticking to clothing/bras and wincing when anything bumps into my chest. I've been…"
"I cant belive they heal hours within you put them on. Totally a must while breastfeeding. Such a good quality"
"I used these for the first four weeks after baby came. It was during that phase where baby was so small he didn’t have a great latch and so I was getting sore nipples. This was great for protecting…"
"Only paci my breast feed three week old has accepted so far🙌🏼"
"Worked great and would definitely use again. The only thing is sizing can be tricky. I would’ve gotten a size bigger and I’d consider my size to be on the smaller side. If you’re not sure, just size…"
"I wore these for the first two months and they truly saved my breastfeeding journey - worked exactly how I expected. They gave instant relief. I basically wore them day and night for the first 6…"
"Love these , I bought due to damage from pumping . One week with creams and balms didn’t do much but two days with these and I’m almost healed !"
"LIFE. SAVER. Bought this the first week I started nursing my son and had the WORST cracked nipples. These solved the issues OVERNIGHT!"
"We got floaties for our toddler and they are great! She loves swimming and these are so nice to have. Company is owned by a husband and wife and they are kind and…"
"I purchased a bat costume for my daughter with Moogco and we absolutely loved it! We used it for our daughters first Santa photos. They are a small business worth…"
"Ordered from here and they sent my items fast! Great quality!"
"High quality toys. Customer service is helpful and responsive. Will buy from this store again!"
"All of my dealings with them have been great!"
"Wonderful company to work with! Great product"
"great prices and fast shipping!"
"Wonderful products"
"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."
"As a breastfeeding mom I truly couldn’t recommend these more. They literally SAVED MY LIFE in the newborn stage and then saved me again when teething started. They’re easy to use, easy to clean and…"
"This is a great item to have for breastfeeding mommas. It feels very cooling and refreshing after breastfeeding and makes wearing nursing bras very comfortable since the fabric is not rubbing on your…"
"These cups protect and help heal sore nipples so quickly. Comfortable under a bra, easy to clean, and worth the investment for breastfeeding. Stats: 5’3”, 140 lbs, 8 weeks postpartum & nursing"
"Great value for the price compared to name brand silverettes. I only really used them for maybe 2-3 weeks, so I’m glad I didn’t spend the extra money when these got the job done just as well"
"These are perfect for breastfeeding. They help keep any ointment or lanolin from getting on your clothes and smooth for immediate relief of cracks or nipple soreness in the first few weeks."
"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"
"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"
"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."
"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."
"These were great in the beginning helped me so much."
"Any first time mama BUY THIS PRODUCT!!!! I cannot recommend and rave about this enough. They HELPED so so much! I wore them all the time when my nipples felt dry, cracked, and just hurt. Those first…"
"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."
"As a breastfeeding mom I truly couldn’t recommend these more. They literally SAVED MY LIFE in the newborn stage and then saved me again when teething started. They’re easy to use, easy to clean and…"
"This is a great item to have for breastfeeding mommas. It feels very cooling and refreshing after breastfeeding and makes wearing nursing bras very comfortable since the fabric is not rubbing on your…"
"These cups protect and help heal sore nipples so quickly. Comfortable under a bra, easy to clean, and worth the investment for breastfeeding. Stats: 5’3”, 140 lbs, 8 weeks postpartum & nursing"
"Great value for the price compared to name brand silverettes. I only really used them for maybe 2-3 weeks, so I’m glad I didn’t spend the extra money when these got the job done just as well"
"These are perfect for breastfeeding. They help keep any ointment or lanolin from getting on your clothes and smooth for immediate relief of cracks or nipple soreness in the first few weeks."
"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"
"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"
"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."
"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."
"These were great in the beginning helped me so much."
"Any first time mama BUY THIS PRODUCT!!!! I cannot recommend and rave about this enough. They HELPED so so much! I wore them all the time when my nipples felt dry, cracked, and just hurt. Those first…"
