OP picked em up but Ima chime in on this.
Wear 2 pairs of underwear and also 2 pairs of socks. It'll be a minute before you can get more. If you have long hair and tie it back also have a few hair ties on. When they throw you in the pod there's always some long haired dudes in there. Strait up trade those for commissary cups and stuff with your new housemates right off the bat.