Crockery id self catering - get from the charity shop so it doesn't get mixed with everyone else's ikea stuff. The same for pans.
Tin opener, corkscrew and bottle opener.
photos and a list of birthdays with addresses to send cards.
flip flops for the shower, towel and dressing gown.
Soap and shampoo.
spare cheap phone.
Winter clothes, the first holiday is Xmas.
Does he know how to use a laundry?
Spare bedding.
wall planner / chart for deadlines and organising social life.
basic first aid and sewing kit.
HC1 so he doesn't get lumped with prescription charges and check vaccinations are up to date.
paper, pens, book bag.
spare toothbrush, comb, hair gel deodorant.
Toilet roll - if he has his own bathroom there will not be one and if he is sharing he might need it anyway.
A wok - you can cook just about anything in one.