Will you have a microwave in your dorm room? You can get a steam sterilizer that goes into the microwave. Or, they have ones that just plug in. They are in the baby area of places like Target and Walmart -- they are meant for baby bottles but hold neb parts very well. They will come out of there wet, so you may want a rubbermaid box to let them dry and then cover so that it doesn't sit open in your room. I remember dorm rooms -- not the cleanest of places.
Good luck -- I'm sure college will be a blast!!!