Yes, I know it's not cool to collect found photos after "Amelie" movie. But I just keep finding them! And I cannot let them lie on the street.
Occasionally, I find something else, like plastic cards, mobiles, wallets and so on. I try to return them to their owners, but first scan them for this collection, if I have enough time )).
As a matter of fact, I lose thing pretty often too. Which means that there's a global exchange of things going on in the world.