Volunteer activities on campus is indeed not so much so from that you need to be observant to choose activities which are really useful for others. In addition to working with a variety of learning activities in the classroom, you too can become a volunteer at certain events.
In addition to friends and new experiences, you can also train the skill to help the people around. This event usually volunteer held every semester holidays. So rather than have no activity during the holidays, it's good you joined. Despite the nonprofit's activities included, but your experience thus far more valuable than material things.