4th year Uni student from Canada here. Assuming it's your first year and moving into Dorms.
Flip Flops or sandals for the communal shower floors.
A stockpile of bathroom stuff.
At 3 pairs of sheets and towels.
Large laundry bin.
Simple and quick to make food items for when meal hall is closed and things get expensive.
6.Garbage Bin
Baby Wipes
Clothes Hangers
Personal Printer
As many solo cups as humanly possible. Bonus points for bringing your own ping-pong balls.
Also helpful
Friendly neighbor or friend to help you.
Uninterrupted sleep.
A healthy understanding of what your alcohol limits are.
A fake ID or know someone who has one.
A consistently quiet place to study.
A printed schedule of your classes.
A quick takeout restaurant that delivers.
An interest that does not completely involve alcohol or partying.
Being on a first name basis with your professors.
An alarm clock set across your room, so you actually have to get up to turn it off.
Hope this helps!