We have a lot of threads about things that have gone missing, but what sorts of strange, unique or puzzling things have shown up in your space?
For ours...
A book on 19th century post mortem photography (suitable for Halloween-- I would have kept it-- but they were writing a paper and wanted it back.)
A rake. Like the kind you use for leaves. In June. No one asked for that one. Its in our shed. Still wondering why someone BYORake to their romantic weekend.
One of those windshield shades that collapses down to a small size, fully open and lying under a bed. Threw it out.
Plastic fingernails. This is actually not that uncommon. Cleaners find them a lot.
A jug for water with "Mama has to pee" written on it. I left it in the cabinet after washing and it disappeared 3 guests later. It obviously made someone laugh as much as it did me.
A nice purple mum on our porch.
What surprising things have appeared in your space?