Something like this was on this site, but I'm still not sure if this is possible. I have this concept of taking old appliances, disassembling them, and recombining components in useful ways. I'm wondering if I can use the electric motors, in, eg, washing machines as electrical generators if I had them capturing energy from wind or flowing water. I was even thinking about making waterwheels that would be integrated into a pipe and hooked up to a fridge compressor fan. Wind (mechanical) would draw water up from a pond to a barrel or something, and then the water would be let down through the pipe, turning the waterwheel. Like a battery. I'm not looking for much power or anything impressively efficient. I'm talking about free components + creativity + time = useful enough. Any comments would help. I don't know much about physics or engineering.