Um we could use solar cells. Or a device that was not n not further specified that provides kinetic energy. Such as like watches you know. Where you just move them m move the the actual device and this pr uh provides it with with uh some energy. So um obviously I personally have to say that dynamo is out of the question really.
Mm.
You don't wanna wind up your remote control before you can use it right ? Um solar cell is interesting.  May fail though , every here and there.
Would you have to leave it by the window ?