At the last derby, I lost two season tickets (only two games left anyway), and my wallet which had my bus pass to get home, about a tenner in cash and my cash card.
After going to the ticket office to get my tickets for the villa and spurs games i went back to Mary D's (where I was when I realised it was missing) and got a ring off the other person whos season ticket it was saying my wallet was at Hyde police station of all places. Some beautiful bugger had handed it in to the police so got it back in the end :)