Contact your university's technology services department. Many schools offer discounted or free computer programs to students --- for example, at the University of Pittsburgh, students can get a copy of Microsoft Office at no cost.
Go out on your birthday. College towns are typically full of bars and restaurants, and telling them it is your birthday often nets you freebies like desserts, appetizers or drinks.
Act as a guinea pig for other students. Students at your school or neighboring schools may need people to practice on --- a dental school, for example, may offer free or heavily discounted dental work, while a beauty school may offer free haircuts.
Go to a fraternity rush. Even if you do not intend on joining a fraternity, the events the fraternities throw during rush week typically include freebies like food and shirts.
Pay attention to the university's social calendar. When colleges host events like carnivals or homecoming parties for their students, you have the opportunity to collect all types of freebies.
Attend special lectures. When your school invites guest speakers or hosts special academic readings, you can usually count on a reception with free food to follow the event.