Have a Productive Summer

Just because you plan on having a fun summer away from classes, doesn't mean that it can't be a productive one.  One of the best ways to have fun and still learn a lot is to learn a new language while traveling abroad. 
The easiest (and cheapest) way for college students from the U.S. to do this is to learn Spanish in Central or South America.  The flights aren't too expensive and there are Spanish schools in most of the towns that tourists would go to.  And the schools are very inexpensive compared to taking classes in the U.S.  Most schools charge $100 or less for a week of one-on-one training.  Many of these schools also have families that you can stay with for very little money.  Staying with one of these families will also give you an opportunity to really get to know what it is like to live in these countries.  You can even bounce from town to town spending a week in each place at a different school.  A quick Google search can get you on the way to finding a place where you can learn another language and another culture.