My husband is an artist so the second bedroom is his studio and a catch all for random things.
Every morning when we wake up, Lestat has dragged a new item out of that room onto the living room floor. There's some weird things in there and some things, I had forgotten we even owned! The other morning, I walked out and there was a wig on the floor - Lestat. Missing something off your nightstand? Lestat. Stepping on a barbie doll in the middle of the night? Lestat.
He uses a shoe box and puts all kinds of little treasures in it too - a white gift bow, a photograph, a measuring tape - and he gets really upset when you move the stuff out. He'll grab it back, put the item on the floor, "dig" in the shoe box, put the item in the "hole" and then cover it up.