usually for international students it's pretty hard, those are pretty much the stuff you can do. unless you are qualify for financial aid, then you can apply for work-study program. I saw an ad today at bookstore, they are looking for people for the fall, 7.15/hr,shouldn't be hard job, you can give it a try. good luck
oh, and check the career webiste regularly, they are jobs avaible for students on campus, jobs such as in cafeteria, cleaning, library and so on.
If you are not visa student and not really stick on to campus jobs, check out the website i have provided here, you will find a lot temporary work/hourly works you can apply while you study. good luck