This human powered cell phone charger is a great example. Using just a few ordinary around the house items, [The King of Random] turned a cordless electric drill into a human powered electrical ...

Available as a kit with drill and driver bits, a charger, a battery, and a flexible extension/bit holder, the accessories almost seem like they're worth the cost of the kit. Unfortunately ...

The multi-speed drill also has an LED to help spot pencil marks in low light. The 20-volt compact batteries work with more than 300 tools in the Dewalt arsenal. Plus, you get a charger and a bag.