You can attach it to your bike!!! :DA new device called the nPower PEG (Personal Energy Generator), just became available for retail, and it promises a bit of power away from the wall, harvested from the kinetic energy created by your own activity — walking, running, etc. (The video above will give you a pretty good idea of how this works.)
Weighing nearly a pound and requiring a ton of motion for a little bit of power (11 minutes of walking will get you one minute of talk time on a 2G call on an iPhone), the PEG may have limited real-world uses and a high price point ($200).
That said, it’s pretty cool to see something out there in the world, capable of collecting all that energy we create and recycling it back into electricity for our daily lives.
(via Charge Your Phone by … Walking? - Rebecca J. Rosen - The Atlantic)