Mini-jobs/jobs that are quiet or where I could learn on the side?

Hello folks 🙂

I'm a student and since I won't be able to get any more student loans soon, I unfortunately have to start looking for a job :')

I'm studying physics and unfortunately can't afford to work something that takes up a lot of my time (hence a mini-job) because I have a lot to study for. But I heard somewhere that someone works for the city and it's so quiet that you mostly just sit around. I thought it would be perfect so I could study for my degree at the same time. Another option is these strawberry cottages, but since they're only open in the summer, I immediately ruled them out. Now I'm wondering if there are any other jobs you know of that are just as quiet and I can study at the same time?