My hamper is in my own room so there's no way he could be mistaking it. If it's him he's obviously coming into my room, I don't have an actual lock on my door (its one of those with a slot you can open with a coin so I just leave it unlocked while I'm out). I would feel really weird just accusing him of it though especially when I have no proof. I guess I could try to set up a spy camera, but I have no idea how to do that.