Windmill
I mentioned this homemade windmill video before, which is one of the craziest things I’ve ever seen, but it just might work. It wasn’t on youtube, so I put it up so you all can watch. Basically he takes a big plastic pipe, makes it into blades for the windmill and uses an old car alternator as the generator. The guy doing the video also has a really unique accent:
Part 1 http://www.youtube.com/watch?v=xnB1l1SWcQ8