I'm not going into extreme detail, the ideas are fairly simple and most already have their own instructables. The electric motor was salvaged from a VCR or disk drive or something (don't even really remember) and I left the gearing intact as well. It's attached directly to a savonius turbine (already well-documented here) which was made out of CDs, sides and caps of 2-liter pop bottles, reinforced with cocktail straws. And I used a super-bright blue LED as the light (I prefer the blue to white) which was $3 at Radio Shack and the only thing I spent to make this project. I put it on an old DVD which was a concept borrowed from the fantastic
USB powered CD LED Light which is also entered into the Let it Glow contest.