Crystal Growing Hedgehog - Blue - Maker & DIY Kits for Ages 10 to 12 - Fat Brain Toys Science & Nature. Toys. This hedgehog has a big problem: it doesn't have any spines.
Toys. STEM Toys. Straightforward, illustrated instructions make it easy to combine the 200+ pieces into an astounding piece of machinery that uses hydraulic power to move, grab, and lift objects like a real human hand!.