$25 to $50

Ever dreamed of having a vending machine in your room? With this engineering kit, you can build and experiment with your own toy vending machine. F...

Creatto is a simple yet versatile building system that consists of just two primary components that can be woven together into countless 3D creatio...

Build six different air-and-water powered models Harness the power of air and water to make things move! Build water-rocket cars, jet-propelled boa...