One of our cats will hit the copy button on the printer overnight because he likes how it moves. He stops when it runs out of paper. We have to leave it empty of paper.One of our old cats used to turn the TV on while we were at work.
We used to leave the remote control sitting on the coffee table facing the TV. There were several times that we'd come home and the TV was on. It happened enough that we figured that it wasn't just from the jerk stepping on the remote and being lucky enough to hit the power button. We started to leave the remote facing away from the TV, and it stopped happening. The cat's been gone for about 8 years, and we're still in the habit of pointing the remote away from the TV when we turn it off.
I kept checking the cable bill for cat porn charges to see if I could catch him.