It's okay, you keep what you find first. Start building up a stash of supplies, it'll help in the long run.

[ he can't take supplies from anyone else, especially since Nathan is so new, he just wants to help more than anything. he needs the petroleum jelly, too, but he can go without, or ration what he has between them. team work! ]

Well, unless you find something for like... musical instruments? I have a friend who is looking for guitar strings. Not that we'll find them here, but.