More ideas from Krzysztof
Buciki – naturalna czekolada – Ziajok

Buciki – naturalna czekolada – Ziajok

The GravityLight uses gravity, acting on a weighted bag, to generate energy.

The GravityLight uses gravity, acting on a weighted bag, to generate energy. great for camping or off-grid living -- no batteries. no solar cells that need sun. no hand cranks that lose their spring.