There are few sensations that can beat the thrill of a frivolous purchase. After struggling all month to make sure that the rent, bills, and car payments are paid in a timely fashion, it can be downright exhilarating to blow a big chunk of change on something unnecessary.

The morning-after regret of the frolicsome purchase is familiar to almost anyone living on a budget. However, it's something that billionaires never have to confront. They can indulge their whims and buy every toy that catches their fancy, however briefly. This includes antique cars, jumbo jets, and even spaceships. No urge is too outrageous and no desire is too extravagant.