I would also add that checking bed sizes is one of those things that parents consider but perhaps their newly adult offspring don't. As an example, DD1's college rooms in C always had single beds. When we looked round DD2's accommodation in a completely different university, all their beds are 4 feet wide (stupid random size!). Had we taken her single fitted sheets from home, they would not have fitted. Double ones would need a lot of tucking in. Because we knew in advance, we could locate some and take them with us. There were a lot of parents trawling round the large very conveniently located Asda close to the student accommodation trying and failing to find suitable sheets on fresher drop-off weekend. Both DDs have admitted that it wouldn't have registered with either of them to check up.
For those of you lucky enough to have all the shopping etc to do, there were some lists on a previous incarnation of this thread from last year.