I didn't work my first 2 years when I was in college. When I was a junior, I worked the first semester at the University Foundation. I basically would cold call UNL alumni to solicit donations for the college they graduated from. It wasn't a bad job, and it was only a few hours a night, only during the week.
I then worked the last year and a half of school, at a shoe store at the Gateway Mall. I was a bit of a shoe geek, so that was fun, plus the other people I worked with were almost all college kids. Sundays were funny to work because everyone would come in hungover and the air reeked of all the alcohol leaving our bodies.