Hi there, I have a bag that wasn't too expensive from Amazon, about £20. It's a plain blue backpack that allows me to have room for a water bottle, laptop, and space for stationery. I find a backpack is easier to manage when travelling and can fit in the locker well at university. My backpack has accessible pockets to put train tickets and things I need to quickly. Good luck finding the right bag for you :-)
ARU Dee
Student Digital Ambassador