Key Bank is a big one, but I think they'll only approve you if they're already affiliated with your school.

It's not gonna make you Yeager or Hoover by any means, but since you're strapped for cash, have you looked into one of those short-term CFI/I "in a week" or whatever programs? Chances are they will be able to offer in-house financing or at least turn you on to and vouch for you to the lending institutions they normally use.