What's the oddest thing you've found while cleaning?

Today I decided to clean my car for the first time in a couple years Yea, gross I know so I could have a place to put my belongs when I travel yay! moving out!. I cleaned my seats, the leather, and the trunk. In the trunk, I found a bra and a swim bottom– my friend’s bra and swim bottom haha! I’m pretty sure these are from four years ago.

Found any interesting things while cleaning lately?
How long had they been there?