DD wants to go into catered, so luckily we've got everything we bought for her boarding. It's washed and ready to go, including items to make it home.
I'm sure I've given this tip already, but large laundary bags (£6/7 Amazon) are great for throwing whatever in, bedding, books, files, extra clothes. DD regularly used three large laundary bags, three small suitcases and various bags, so be warned, and that's without anything they need for self catering!
DD was able to apply for accommodation at her insurance, Edinburgh.