Core77

Your feet on bicycle pedals, pistons in a shaft, and a power drill can all do the same thing: rotate something. The fellas over at DPX have used this principle to get quite creative:

The video is poorly edited (i.e. mostly filler) and has bad music, so load it up, turn down the sound and skip to 0:36 and 1:04 for the highlights.

via toolmonger