Need an office bag

When I say office I mean a bag that I can store my office in.

I’m a graduate student in my internship to become a therapist. I have an office space Thursday and Friday and have my own supplies for my room for my clients that I need to pack up every night and bring back.

I have arts and crafts, ring light for Telehealth, journals, laptop, clipboard, big file of resources, stickers, candy, clock, etc etc

I am in the search for a big Mary poppins type bag that I can have out and looks nice.

Any ideas

Would love under $350 give or take. ( I am an unpaid intern after all)