I had a post on this somewhere on here but I can't find it right now.

• Thick-walled oven safe pot of some kind (dutch ovens are peak but you can get something else too). Even if you don't cook it's amazing to reheat leftovers in the oven. Alternatively, a sufficiently big microwave dish with cover.
• Carpet & wall drapes. You're not gonna arrive with much. Cloth on your floor and walls makes things warmer and more inviting
• Way more trash bags than you think.
• If you're sexually active or intend to be, an electric kettle & tea/a moka pot, hot plate and preground coffee are a really good idea. Caffeine makes the world go round and ordering in less cuts both cost and waste.
• Two bathrobes
• Two LARGE beach towels
• Tools & emergency supplies as others have said

PS: Now's the time to learn how to use a straight razor. Safety razor if you wanna cut down on time. The reduction in cost & waste and improvement in smoothness is worth the nicks during the learning phase.