As mentioned, any paper products---napkins, paper plates, paper cups, paper towels, toilet paper, computer paper.
Any type of personal clothing item that you like now, that you know in the next year or two will be wearing down--socks, underwear, t-shirts. My husband keeps a few extra pairs of his favorite shoes in the closet--Walmart brand :) If you are at the end of your winter coat's lifespan, you could buy one on sale in the next few months, same with gloves.
Noodles and rice to be put in plastic containers.