Freedom Toys

by DragonDon in Circuits > Gadgets

2190 Views, 30 Favorites

Make Energy From Weeds

antoniraj

by antoniraj in Energy

Five Minute Solar Phone Charger

prank

by prank in Energy

DIY Solar Phone Charger ($5 Battery Free - UPDATED!)

ASCAS

by ASCAS in USB

Build Your Own Flat Panel Solar Thermal Collector

iwilltry

by iwilltry in Solar

Almost Free Solar Hot Air Collector

ecosteve

by ecosteve in Energy

Free Energy Generators

techno guy

by techno guy in Science

DIY Capacitor

_Sean_

by _Sean_ in Science

Make a Water Bottle Capacitor

Plasmana

by Plasmana in Science