If you already have backup (or exclusively off-grid) power with a storage battery, then I wouldn't think it would be too much trouble to wire a bicycle generator into it. If not, it would be a pretty major undertaking for the small amount of power you could produce that way.

We haven't done that yet, but we keep poking around the idea. We can go without electricity for a few days in warm weather (and really, our co-op is top-notch in restoring outages), but water, not so much. Our well is over 300 feet deep, too deep to pump by hand.