I'm still working at mine. I work for my city..kind of. I work in the food stands at baseball games and stuff. Pretty fun at times plus I get free food/drinks.
I never had an official part-time, nor full-time job. I just did odd jobs like snorkeling for sand dollars to process, cleaning heads (toilets), selling used vehicles, being a deckhand on fishing charters. None of those jobs have influenced my career path, unless cleaning heads subtly motivated me to enlist in the Marine Corps.
Wal-Mart for a few years and now I'm a salaried music instructor. The part-time job didn't do anything to influence my line of work other than paid for my advanced education.