Just think of the good you could do with £640,000 in disposable cash. You could help charities, be the ultimate Secret Santa, even start your own orphanarium. Of you could buy the Veniamin Human Slinky costume on eBay. Decisions, decisions.
Granted, you aren't just buying a giant slinky suit for two-thirds of a million — that would be preposterous — you are also allowed to perform the Human Slinky act exclusively worldwide for five years. After that point, you'll only be able to wear the suit to private parties and the like. The suit and act was originally developed by Romanian artist Veniamin. [eBay via Technabob]