[The Real Arfy]

Learn to cook, especially foods from other cultures. Seriously, in my preparations for university I decided I'd make nice stuff out of "nothing". Sure I can go out and buy the exact same thing off the shelves, but my way a) is actually quite fun b) is cheaper c) is healthier d) makes me not watch TV or go on the computer and I actually feel alot better for it.

Or play/attend a new sport. Something cool. The ice hockey season is starting soon. Thats cool.

Other than that the only thing I can think of is to go travelling, and thats pretty expensive...