Great idea, get 2-3 treadmill from unclebuck rig them to the same number of power generator, kidnap a few itinerant instal them on the treadmill & put them to workTreadmill is more efficient
You can pretend you are walking somewhere
You can think bigger and start a gym with all exercise equipment rig to power generator use all that free power to grow & make some extra money from peoples having their work-out.Take a excresise bike , mount 3 car altanators to the weghted front wheel, get 6 deep cycle batterys and two power inverters. and put a sign out front, FREE Work out. inqurer with in