My nieces are constantly leaving things at my house. When they go home each afternoon, inevitably there are items left behind. Jackets, hairbands, crumpled socks... I could start a thriving second hand shop for their "forgotten" items.
About four months ago they left a hairbrush. It was a nice one -- wooden handle, broad head, soft tines.
"I think I'll hang on to this one," I thought as I stowed it in the bathroom. Of course if they asked for it back or said they were missing it I would produce the item, but maybe this would teach them to keep their belongings together and use their backpacks.
Yesterday my fifth grade niece spotted it.
"Hm... is that my old brush? There was a reason we quit using this one. Let me think... oh yeah! That's the one we dropped in the toilet!"
Remind me never to touch any of their stuff, ever ever never ever again.