If you want to go green and be environmentally-friendly, here is a solar-powered device, which is claimed to be cool enough to make you feel the touch of neat and clean environs.
Recently I talked about a solar-powered charger, which needs sunlight to get it charged; now I have a solar mobile phone from Beijing Hengjiweiye, which was presented during China Beijing International Expo 2007. The latest solar-powered mobile is claimed to allow you to charge battery just by making use of any light source.