I read on the Maxis ea site that sims would bring stuff home, like furniture, when they're at Uni, but have never seen them do so. Is it only Greek house inmates that do that? I don't play Greek houses so that would explain why I've never seen it.
Yes, I believe only Sims living on Greek lots can wander off and bring goodies home. There are "benefits" for each level of Greek house - with 3 family friends Sims can (and will, repeatedly) go and bring back pizza and with 15 family friends they will come back with little things like plants and such.
AncientSim, thanks for the link to Carrigon's fix! I had totally forgotten about that one. I really don't mind them visiting campus, I'd just like a sanity check involved but in the meantime tuning it down will definitely work.