What I did was sign up to student careers, and multiple Agencies around where you'll be living. Student Careers have so many work within the University you studying at, so its convenient. For example, I got sent vacancies and one of which was for the University Library. Did the interview and got the Job. After class I just go down to the library for work. This means I get to do my Uni work when its quite in the evening. Mine was not permanent but I like it that way. because I can say no to a shift (covers)If I'm busy with Uni work, exams, or going to see the family back in home town. I also applied for other agencies because it means lots of different jobs are being thrown my way and its the matter of me excepting or not.
Some might get permanent Jobs but I preferred the agencies and student careers. Also Student Careers can give you random Jobs like roll playing for Psychology students. so they give you a script for you to pretend you are a patient so the students can practise on you. Another example is that you could be asked to come in for ultra sounds and other stuff for nurse students to practice on.
Am I making sense?
Apply for couple more agencies so you can have frequent work. But you don't always have to go if you don't feel like working, you can go only if you feel you need that money. That's how I like it. But you can always just apply for a Part Time. permanent work.