Its hard to see from this quickly snapped shot, but the card is a student id-card stuck in the side of a chair on a South West train service. Luckily, the owner was still sat in front of me when the train reached its final destination and I recognised that it was him from the photo. (He probably has no idea that I took this, carefully looked at it and then waited for him to stand up so that I could identify if it was him..)
Later that day I was shopping and the (lovely) sales assistant gave me a free product completely out of the blue. Karma? I think so..