Just because you're in college doesn't mean that you can't decorate your dorm room to celebrate the holidays. Hang up lots of garland and accent it with big red bows. Too add some festive fragrance to your room (we all know that most dorm rooms can use that), buy some cinnamon sticks, tie them together in tiny bundles, and place them in a festive bowl. Are you dead set on a Christmas tree for your dorm? Opt for a small decorated Christmas tree.
While you may not have the giant fir that you're used to at home you can still create holiday ambiance without filling your room with a massive tree. It's a good idea to get a tree with built in LED lights and fiber optics; these trees don't require decorating and will not be a fire hazard—won't your R.A. be pleased?