The motor chair that should power your house
The principle behind this motor chair is solid: power sewing machines, fans, and other small tools using human energy. The mechanism, however, needs a little work.
This 1889 invention out of Moscow, Texas (yes, all that is real) proposed using sitting motion to power a small motor. The iron contraption would use your body weight, turn a gear, and then shoot the seat up again to repeat the process.