Build Your Own Eco Fidget Lights (8+)

Use the hand crank to generate electricity and light the three LEDs! Learn about polarity and see what happens when you turn the crank in either direction.

Instruction sheet included. 7 total pieces. Build 7 projects. Includes three (3) LEDs - Heart (red), Star (blue),and Blue/Red Bi-Directional. An excellent introduction to Green Energy. Compatible with other toy brick sets. No batteries required!