What is there to do over the summer? Currently,

-I go running in the morning, but nothing for the rest of the day.
-I used to be addicted to gaming, but I quit
-Too much listening to music lately makes my head hurt
-I don't have a lot of money, and no car (but public transportation is an option before it gets too dark)
-1 friend lives near me, but we've already hung out a lot.

I have 3 weeks until grad school starts (& salary too!) which is awesome, and I really can't wait to go and meet some cool people. But in the meantime being at home is killing me. So what do you suggest to pass the time? What do you do?