The nPower PEG by Tremont Electric was presented as the world’s first human powered charger for your devices. It made use of the kinetic energy you create as you walk, run, bike, or move around, giving you 100% green electricity whenever you need it. The creators of The nPower PEG went into the Shark Tank asking for $2 million for a 22% share of the company. The sharks were impressed with the product and saw its potential, but did not invest.
UPDATE: This product has been discontinued