Zojirushi rice cookers are the best as far as I have seen. You can find some nice ones off Amazon. I really find the features that allow it to keep rice warm to be as useful as cooking it. Some people leave rice in there 24/7 and let it keep it, which I don't do, but I do find myself starting rice when it's convenient and letting it keep it warm until I need it. Obviously it doesn't use maximum rated power during this time. I also don't think I need to tell you 5.5 cups of rice is WAY more than you need in a dorm room
And if you're into tea I suppose a hot water maker could be good too, but probably more useful for a larger household.
The one appliance I need to get that would save a lot of gas would be the aforementioned toaster oven. Right now we don't have a toaster even so I heat bagels on a frying pan... But they are great especially for 1 or 2 people because a lot of things you make will fit in there.