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Create A Castle BuildMaster Indoor Activity MEGA Kit CastleMagic Sand
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Create A Castle BuildMaster MEGA Kit is an indoor sand and beach toys activity kit that uses CastleMagic compound to build detailed castles. The kit includes 4 custom molds, 4 dimension forming tops, 1.5 lbs of CastleMagic sand, keys, toppers, tools, storage bags, play mat and storage case. For ages 6 and up.
Key Features
- Includes 1.5 lbs of CastleMagic compound
- Four custom molds to build an entire kingdom
- Four dimension forming tops and multiple toppers
- Two locking keys for mold release
- Pack and design multi-tool for detail work
- Storage bags included to prevent compound drying
- Includes play mat and storage case
Details
- Brand: Create A Castle
- Product type: Sand & Beach Toys
- Contents: 4 custom molds, 4 dimension forming tops, 1.5 lbs CastleMagic sand, 2 locking keys, pack & design multi-tool, storage bags, 1 large tower topper, 4 small tower toppers, play mat, storage case
- Compound: CastleMagic sand
- Ages: For ages 6 and up
- Features: Patented split mold technology, newer version of CastleMagic compound, storage bags prevent drying
How to Use and Care
- Close mold, insert key and turn to lock.
- Insert lid into mold and flip upside down before filling.
- Pack compound in using small quantities, a little bit at a time.
- Pack sand into crevices using included multi-tool or back of a pen.
- Flip mold upright, turn key and remove, then slowly open mold.
- Add plastic toppers to finish towers and store compound in pouches to prevent drying.
Who It Is For
Great for sensory play from kids to senior citizens. Intended for builders ages 6 and up who want indoor castle building.
Frequently Asked Questions
What does the MEGA Kit include?
The kit includes 4 custom molds, 4 dimension forming tops, 1.5 lbs CastleMagic sand, 2 locking keys, pack and design multi-tool, storage bags, 1 large tower topper, 4 small tower toppers, play mat and storage case.
What is CastleMagic compound like?
The CastleMagic compound combines the best parts of Kinetic Sand and Playdough, can be handled, picked up, stacked and smashed to be reused.
Will the compound dry out?
No, the kit includes storage bags and pouches to prevent the compound from drying out when finished.
What ages is this kit for?
For ages 6 and up.
Are there instructions for molding and sculpting?
Yes, instructions for use are included and video tutorials are available on the Create A Castle website.
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.


CastleMagic feels like a mix of kinetic sand and playdough, so it holds detail but stays soft. It can be stacked, squished, and reused again and again, and included storage bags help prevent drying between sessions.

The kit includes four custom molds and interlocking pieces so kids can build a single tower or an entire fortress. Molds lock with the included keys, making assembly simple for ages 6 and up.

Patented split molds capture crisp stonework and architectural details that other molds cannot match. Use the multi-tool to pack compound into crevices for the best detail, then flip, unlock, and reveal your piece.
Pick a kit that fits your child’s age, the space you have, and how much cleanup you want.
- Age and Skill: Look for recommended ages. This kit is designed for makers aged 6 and up, and suits a range of skill levels.
- Mess and Cleanup: Choose a compound that stays contained and soft. Kits that include storage bags and a play mat keep cleanup quick.
- Kit Size and Pieces: Consider how many molds and how much compound are included, so you can plan for group play or solo projects.
- Reusability: Reusable compounds that do not dry out offer longer term value, and replaceable tools and toppers extend play.
- Where to Play: Indoor kits work best on a table or mat. Avoid carpeted surfaces for easier cleaning and clearer detail capture.
What age is this kit for?
The Create A Castle BuildMaster MEGA Kit is intended for ages 6 and up, offering appropriate challenge and safety for that range.
Will the compound make a mess, and does it dry out?
CastleMagic is low mess and stays soft, and the included storage bags help prevent drying when the compound is stored after play.
Are there small parts or choking hazards?
The kit includes small toppers and pieces, so adult supervision is recommended for younger children and it is not for children under 3 years.
How should I store the compound between uses, and can I buy refills?
Store CastleMagic in the included pouches to keep it soft. For refill availability, check the product page or contact our human customer support.
What are your shipping and return policies?
We ship from a US warehouse, offer free US shipping on orders over $100, and accept returns within 30 days; contact human customer support for help.
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"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!"
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"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!"
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"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…"
