What is a Young Man Supposed to Do During Summer? Please Help?

I'm on summer, albeit nearly over. I head out to town or clubs about 3 nights a week. But those other 4 days what can I do? Money isn't really a huge problem for me, but I'm going to look for a job just out of sheer boredom. What can I do? I have a playstation, and 24/7 access to the internet. Any suggestions?
Preferrably something innovative. That will leave me feeling like I've done something with my time…
At the moment All I'm doing is sitting around on facebook.I'm a smart guy and I'm just wasting my time.

Suggestion:

go to a homeless shelter and volunteer to help out and serve food or something