I managed to buy a new 19 inch LCD monitor, car stereo, and battery backup this afternoon with money I didn't know I had. It was my daughter's idea, to be fair.
We were at the bank, depositing an expense check. We noticed that they have a free coin sorter (free if you are a credit union member). She dug out more than $17 from her purse (I swear, women's purses are like bags of holding). Anyway, her idea involved the huge pile of coins that we had lying around the house, in bags and in an old packing box. That actually came to enough for all that stuff above, which was a pleasant surprise. So my office got a nice little upgrade with the found money :)