What should I remember to pack for school?

I’m going away to school, and I’m getting packer’s block think writer’s block on what I need to bring.

What are things that you can’t live without. I’m looking for everything from mouthwash to Tylenol. Anything that you would miss in a new living arrangement. I’m hoping to spare myself (and anyone else in my shoes) the difficulty of reaching for, say, a stapler, and not having one handy.