Anyone have a cure for boredom?

Over the past several months I have become increasingly bored. I first started to read good sized books, but realized i read fast and would finish it in around two days. So I started to lengthen my work outs, but i find that after a while I'm just wasting time. I tried a few instruments and realized that I'd rather listen to music than make it. I seem to have a lot of time in between cles and my sports practice. When i go out with friends, it just seems to be the same thing but on a different day. Any one have any ideas?