Green gadgets are coming out in the market every now and then. Now, it is the charger’s time to go green. The Yogen is a charger that uses human power to charge small devices. It has a pull chord that produces clean energy. The charge your small gadgets, simply plug in your mobile device and start pulling the chord attached in one end of the charger. While the pulling activity takes place, the energy produces will then be transferred to the mobile device. This can be a perfect charging activity for people who have enough time to pull the chord.