I have 2 sets of very good quality TWIN XL sheets, perfect for UBC dorms ($25 per set or $40 for both) Both are neutral colours, light blue and dark grey. Fitted sheets, top sheet and pillow cases. I also have a bedshelfie that clamps on to the beds in most dorms. See image
I have a lot of miscellaneous and essential items as well that would be great for first year dorms including a mini fridge, mini kettle etc. Enquire for other things you are looking for!