What's a good hobby to pick up?

I just finished cles for the semester and don't know what to do with myself until August! I work basically 8-5 M-F but get SO bored in the evenings! I need to update my scrapbook and get some books read but what's another little hobby I can pick up to kill some time? Knitting? Crochet? My boyfriend is 500 miles away otherwise I wouldn't have this problem....