I must start nagging my DD2 to sort her stuff out, she is going into third year and everything that came home in June is abandoned in the garage.
Big blue ikea bags work for everything, washing, carrying your Tesco delivery in, moving stuff around and of course bring the dirty washing home.
We did IKEA 2 weekends ago as this year she is living out and needed important things like under bed storage boxes and cushions (many).
Her bed for the last 2 years was a single and she was happy with a single duvet plus a couple of fleecy throws. We invested in a all seasons duvet so she could choose how warm she needed to be. She used all of it and the blankets as it is apparently much colder up north even when they heat the halls to hospital temperatures.
Her most useful piece of kitchen equipment was the wok, plus small boxes so she could batch cook and freeze.
I would say pack light and add to what you need but neither of my 2 have managed this and so yet again a rammed full car will be heading north and then we will all be trying to work out how to fit in all in a box sized room.
Read up on the moving in day plan for your particular hall, when DD1 went up to her city hall it was very organised and went really smoothly.