Last week, during Apple's quarterly earnings call, the company announced they were holding more than US$250B in cash. That's a lot of loose change behind the couch cushions at 1 Infinite Loop, Cupertino. What should they do with that cash? While money in the bank might warm the cockles of Apple's shareholders' hearts, the best use for cash is doing something useful with it. Here are five things I think Apple should do with their cash (aside from cover my mortgage!).