If crowded, booze-fueled beach parties aren't your thing but you still love the water, try going to a water park for a spring break activity. Plenty of other college students will be there to socialize with, but in an environment that isn't as loud or potentially dangerous as drunken beach parties can be. If you wish to travel and go to a water park, try Wisconsin Dells, which bills itself as the Water Park Capital of the World. Though March or April might still be too cold for outdoor parks, the indoor parks will be open and ready to enjoy.
If the great outdoors is a big draw for you, camping is a fun way to spend your spring break week. You can camp out the entire week in one spot or move to several within the same area. Along with camping, potential activities for the week include fishing and hiking, depending on where you camp. A way to make the trip educational would be to visit a national park or historical area like Big Bend in Texas, the Appalachian Trail or the Grand Canyon in Arizona. If you prefer the cold, try some parks in the northeast or similar areas where there may still be lots of chilly days in March or April.
Pick an area you have always wanted to explore and find several places you want to visit. Since you have an entire week, you will not feel rushed like you would if you visited in just a weekend. You can even do a themed road trip. A good example of this is a theme park road trip. In any given area of the United States, there are several theme parks to visit. Map out each one and the travel time between them and see how many you can visit in one week.
Instead of traveling and spending all that money (or if you simply do not have any money to spend), try staying put where you are. If you go to college close to home, this could be a good time to reconnect with family or friends without having to worry about rushing home to write that paper or study for an exam. If you are going to college away from home, this is a chance to explore the area with spare time you may not have had while classes were in session.
Though volunteering your time may not seem like it would be much fun, it can be fun and extraordinarily rewarding. If you plan to stick around town, volunteer at places like soup kitchens, food banks or elderly homes, or even build a home with Habitat for Humanity. You can also turn your volunteering into a chance to travel. Several charities need help abroad and are willing to take on students for a short period of time. Ask your school counselor for more information about these opportunities.