The cat I mentioned above would knock stuff down just to watch it fall.
If you put it back, she would glare, then knock it down again.
Usually paper.
Mine wouldn’t waste drinks. If they see em I can count on a few cat hairs around the rim of the glass and a damp face nuzzling at me. Not too fussed...
A cat I had some years ago liked to slapshot cds I left in a stack near one of my computers. He could get some real distance!