I have recently read article about tiny windmills that charge your electronics. the windmill is so tiny it it almost the size as a gain of rice. and can give enough power to charge up your electronic for a hour long chat.it is super durable.it is made out of very thin nickle one thing i think that this product needs to improve on is because its a very thin piece of metal it could cut you,and also because its so thin it would be a deep cut. but i would still want one of these wind mill chargers. because most of my chargers get ruined.