The Delft University of Technology has developed the first solar powered mouse. It only charges on actual sunlight, so there is question as to whether the mouse can be implemented in real world work environments. According to the University, its success depends on:
a lot of factors, including the willingness of the user to adapt his behavior to favorable light conditions by regularly charging the unit with daylight from the window, and the computer usage pattern.
I have the feeling that this mouse just isn't for me. I mean, I live in my mom's basement. I don't have the luxury of a door - let alone any fancy windows. These people need to live in the now. Don't get me wrong, I am a huge proponent of environmental sustainability and conservation. I just make my contributions in other ways. I pee in the sink.
Solar Powered Mouse [Core77]