Too precious for their own good, perhaps, but I don't care: I think the LaCie CurrenKey USB Flash Drives, shaped like thick coins and cast in bronze or silver, are very cute. I only wish they were a bit more ornate so that they looked more like real coins. Perhaps the designers were worried they'd be too easily lost if they were less distinguishable from real change.
Give the coins a little twist and the USB fob slips out.
Prices are fittingly reasonable: $20 for the 4GB "Penny" and $30 for the 8GB "Dime".