My parents collect automated musical instruments, like this modern German hand organ that my father brings to organ rallies and music festivals. Note the stuffed monkey.
It’s actually quite difficult to play so that it sounds good. You have to be strong enough to keep up the crank, obviously, but you also have to train yourself to move your arm steadily through the swing. Otherwise, you tend to speed up and slow down, and the music gets distorted.
My parents do some cool things.