You could try a night shift at a grocery store or something similar. Since you're in school it may not be a great idea but if you can handle working nights I think it'd be all right. I've never had that job but it's always been attractive to me because I don't think you'd have to interact with other people very much. Just stock shelves, clean up, and whatever else. It also doubles as an excuse for getting out of social events that happen in the evening.