I'm tempted to gamble it all on the stock market, just to see what it is like to be a businessman or whatever the right term is.

Or I could bet it on the football when the next season starts. I know a guy who places big bets (1k plus) on games using this system called any unquoted. It means if neither team scores more than 3 goals, then he can net a decent profit. He also places a lot of bets on games involving the likes of San Marino and Andorra, if you look around you can get odds that make it worthwhile.