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Create A Castle BuildMaster™ Indoor Activity Starter Kit Bundle
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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. 💚
Order your own Create A Castle BuildMaster™ Indoor Activity Starter Kit Bundle! NEW indoor activity starter kit with a proprietary sand compound to build amazingly detailed castles quickly and 4 molds to build an amazing castle! No mess, does not dry out with included storage bags, holds shape and offers limitless creativity. Based on our award winning 2020 Toy Of The Year outdoor technology, we are excited to bring outdoor play indoor! Become a skilled sculptor in no time with mind blowing details that our molds will reveal. Play for minutes or hours from the comfort of your home! When you are finished, included pouches prevent compound from drying out! Build a single tower or an entire fortress, it's entirely up to you! Watch video tutorials for tips how to mold and sculpt using our proprietary sand and snow for the perfect castle. Build, Smash and Repeat over and over! For ages 6 and up.
See it in action!
Each kit includes:
- 5 custom molds to build an entire kingdom
- 2.4 lbs of CastleMagic sand
- 2 locking keys
- 5 dimension forming tops
- Pack & design tool
- Storage bags for sand when finished to prevent drying
- 1 large tower topper
- 4 small tower toppers
- Play Mat
- Storage Case
Read the rave review from The Toy insider's own James Zahn!
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.
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For qualifying orders of $100 or more, the maximum available discount applied to your order is $30.
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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.
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