Whoever said you needed an outlet to power a video game? This dad used a rowing machine to power his video game console. He attached two DC motors to the flywheel of the rowing machine with a pully mechanism. The DC motors acted as generators that could supply power to the video game console. The only way the console would turn on is if someone was using the rowing machine. No rowing means no video games!
This is related to engineering because the dad made a rowing machine into a generator. He used engineering to rig it.
https://www.popularmechanics.com/home/how-to-plans/a22878720/video-game-rowing-machine/
