Restaurant work or Grocery would be your best bet.

That's what I did when I was in school.

try retail/sales, Maybe even working behind the counter

I worked overnights at fedex loading trucks. Pay was pretty good and the hours were reasonable for working overnights and the managers and supervisors were nice. The best part about working overnights at most places is that they will usually let you wear what you want instead of a uniform and have some other more relaxed rules.

I work at Advanced Auto Parts as a part-time job as a college student; it isn't a bad job but don't expect many hours, your college schedule will have a big impact on your hours worked per week but a job is a job.