and where do they go????
My example: 10 days ago DS age 9 had a bath. He reappeared wrapped in his Disney Cars bath sheet (yes bit young for him but he still loves the towel) went to his room, reappeared in his pjs for a story. He didn't go downstairs. I read the story and then went to bathroom - no towel. Asked him where it was, and he looked blank but said he hung it up.
10 days later and despite extensive search of his room and upstairs there is no sign of it. It's not anywhere, really not. Even if he'd deliberately hidden it, which I'm sure he hasn't, we'd have found it as I know he did t go downstairs.
Now I know there will be a rational explanation but it's a big thing to 'lose' between two rooms, and we extended search to whole of upstairs. No doubt at some stage we'll smell the mildew 
Anyone else lost seemingly unloseable things? And did they ever reappear? So I feel less mad