Couple of strange finds come to mind.

Last week I found a pager lying in the road. Who uses a pager anymore? I was hoping the owner would page it so I could get it back to them. Hasn't happened. I also contacted the paging company, who has been less than helpful in locating the owner.

Back in December in the early morning pre-dawn hours I found a nice Planet Bike headlight lying in the middle of an intersection. I spotted it because it was on. I'm still wondering how a headlight that was turned on fell off someones bike in the darkness of a Winter morning and they didn't notice?