Since we can't all be going out in thunderstorms with kites, keys, and whatnot, having a practical and handy electrical generator is invaluable. If you're considering building one, you're in luck! We've found some useful videos for your perusal:

Bicycle Generator by Leo W

Simple generator: AC electric generator for science fair by wbeaty

Simple Homemade Generator for Beginners by PERKINSPRODUCTIONS1

A 220 volt homemade generator. DIY Bike Generator by kreosan

Homemade Hydroelectric Generator by Earl Co

Homemade Generator by pzaman55555