Lump of Coal

Prank your bestie with… a lump of coal?
 But wait—it’s Crazy Aaron’s® Mini Lump of Coal Thinking Putty®! This sparkly black putty looks just like a piece of coal, but it's packed with way more fun. Perfect for a holiday laugh or a stocking surprise that’s sure to sparkle!

Thinking Putty® helps build hand and finger strength through a fabulous tactile play experience with unique, unexpected properties and provides relaxing, yet stimulating interaction for anyone with sensory integration issues.

Thinking Putty® is non-toxic, won't dry out, and won't leave a sticky or slippery residue on your fingers, so it's great for stretching, molding, bouncing, tearing, popping and playing by kids and adults alike.