I have a cracker. We're currently doing our new house up, so went to B&Q to buy wallpaper and other bits after work, paid, loaded up the car, put the trolley back, went home, hubby asked how much something cost, so i went to my handbag for the receipt, and realised i'd left my handbag on the trolley, with all my cash/cards/phone/sat nav and pregnancy notes in!
Luckily, some nice woman found it and handed it into the police station, phew!!!