I would suggest some hand lotion if you have some you can spare. We're headed towards winter, and that is one thing that I need for my skin. It's also usually something I avoid buying until I have painfully dry skin when money is tight. Another suggestion would be dollar store asprin, bandaids, allergy sinus stuff, and maybe some children's cold medicine if you have some or can find a good deal.
Another thought, dish soap and sponges for the dishes. If they are new to eating at home more often, I am sure the dishes will surprise them.