I got my GP2X stolen last year. It was at a large sailing club, and I had no idea who did it. Thinking fast, I went to the main office, and asked the ladys who work there (They are a my friends.

) and asked them a favor. They called out over the intercom that an important device had been stolen from someone, and that its internal GPS tracker had informed them that its position was somewhere in the east boat yard (Where all the visitors park).
Nothing happened at first, so I kept looking. 30 minutes later, I walk by the office... And there it is. Someone had ditched it in front of the office doors. Thank goodness the GP2X is an obscure enough device for them to believe the announcement! They probably had no idea what they had nicked.