Create A Castle BuildMaster™ Indoor Activity MEGA Kit - TOY OF THE YEAR FINALIST!

Regular Price
$19.99
Sale Price
$19.99
Regular Price
$24.99
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Unit Price
per 

Style: Sand

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As seen on Shark Tank! Build sand castles inside on your tabletop, said no parent ever! Now they can with our exciting new indoor line based on the split mold technology of our award winning outdoor line!

Product Highlights:

  • The joy, experience and creativity of building sand castles now sits in the palm of your hand, at your kitchen table.
  • Each activity kit comes with our newer version of CastleMagic compound to build amazingly detailed castles. The compound combines the best parts of Kinetic Sand and Playdough! It can be handled, picked up, stacked and the best part is it can be smashed to be reused over and over.
  • The patented molds deliver pieces that can be interchanged and have the most realistic details of any castle molding system.
  • No mess, does not dry out with included storage bags, holds shape and offers limitless creativity. When you are finished, included pouches prevent compound from drying out!
  • Great for sensory play from kids to senior citizens!
  • Build a single tower or an entire fortress; it's entirely up to you! 
  • Watch video tutorials on our website for tips on how to mold and sculpt using our proprietary sand for the perfect castle!
  • Build, Smash and Repeat over and over!
  • For ages 6 and up.

Instructions for Use:

  1. Close mold, insert key and turn to lock.
  2. Insert lid into mold and flip upside down before filling.
  3. Pack the CastleMagic compound in using small quantities, a little bit at a time. Pack sand into all the little crevices, using included multi- tool or back of a pen to push down. The better you pack it, the better the detail!
  4. Flip mold back to upright position, turn key and remove.
  5. Remove the lid and slowly open the mold.
  6. Add plastic toppers to finish the towers.
  7. Build, Smash, Repeat! 

 See it in action! 

Each mega kit includes:

  • 4 custom molds to build an entire kingdom
  • 4 dimension forming tops
  • 1.5 lbs of CastleMagic sand
  • 2 locking keys
  • Pack & design multi-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!

    How long will it take to ship my order?

    Your order will be shipped within 3-8 business days.

    How much does it cost?

    We offer free trackable shipping on select items.

    Shipping rates for partner brand items and international orders may vary and will be calculated at checkout.

    Where is my order shipped from?

    Big Frenchies apparel is shipped in plastic-free packaging directly from our Virginia facility. Items from our partner brands may have different packaging and can be shipped from any of their fulfillment locations worldwide.

    How long does shipping take?

    USA: 3-8 business days
    CA, AUS, UK, and Europe: 5-21 business days
    Rest of world: 5-25 business days

    As a small family-owned business, we thrive on your feedback, so it's vitally important for us to make sure you're happy with your purchase.

    Our return policy is simple: You have 30 days from delivery to request a return or exchange for most products shipped within the United States.
    Customers are responsible for return shipping costs unless the return is due to a defective product. Learn more about our full return policy.

    Please note:

    • Returns are only available for US orders. International orders are final sale.
    • For health and safety reasons, personal care items (like baby creams, shampoos, balms, sunscreens, and lotions) and food products cannot be returned once opened.
    • Custom and handmade items are final sale and cannot be returned or exchanged, as they are crafted specifically to order.
    • A restocking fee may apply to certain eligible returns. If applicable, this will be communicated upon return authorization.

    You can reach out to our customer support team by submitting your request via the "Contact Us" form or by emailing us at support@bigfrenchies.com. A member of our support staff will respond to you as soon as possible.

    We'd love to hear from you!
    The best way to reach us is via email: support@bigfrenchies.com.

    Have questions about sustainability, shipping, return, exchange or something similar?

    Check our FAQ page.

    What Makes Our T-Shirts Special?

    Making a Difference

    By choosing organic cotton clothing, you are using 50% less water, 50% less energy, and 46% less CO2. By choosing Big Frenchies, you are also planting a tree with every order.

    Ethically Made in USA

    We strongly oppose child-labor, and that's why all of our products are proudly made in USA by a small, family-owned business.

    Designed in France

    Our unique designs are created in Paris, so you will feel the French love every time you wear our clothing.

    GOTS-Certified Organic Cotton

    From seed to shelf, Big Frenchies' entire supply chain is inspected by a third-party auditor to ensure that all suppliers are adhering to GOTS standards.

    Non-Toxic

    The cotton we use is grown by organic farmers in an environmentally-friendly way, free of toxic chemicals.

    Amazingly Soft & Durable

    With no chemicals to weaken the fibers, our organic cotton clothing is more durable and softer than conventional cotton clothing, which makes it a great choice for people with sensitive skin.

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