My cousin's PS2 controller while playing KH2 (i think, not sure), we were trying to get 100% progress, and had been stuck in on one of those optional missions for hours and were forcing the controller when it suddenly snapped, one of the two hand holder thingy becoming unattached. I quickly put it back in place, gave it to him, and in his next try he finished breaking it.
I have accidentally broken a few of mouses by grabbing them, forgetting about the wire and pulling them away, even one with one of the browser clicking madness games.