If you run any of your appliances off battery banks you might find this bike generator handy. It is simply a frame into which any bike will fit and when you are finished generating electricity you can quickly release the bike to use for the road again. The generator apparently creates 150 to 200 watts easily. You can buy the generator ready assembled for $289 (US only) or you can buy the plans for $35.

Pedal a Watt Via Hugg