STEM Toys.
Toys. Mini Materials - 1:12 Scale Red Brick Mold - Arts & Crafts for Ages 8 to 12 - Fat Brain Toys Arts & Crafts. Fill this mold with almost any kind of hardening material you can imagine - plaster, concrete, anything!.- and soon, miniature buildings, skateparks, dioramas, fascinating crafts, and artwork masterpieces will flow from it like water.