Rolled oats, brown rice, beans (dry and canned), dried fruit, nuts, fresh produce (whatever is in season), frozen vegetables (for emergencies) and lean meat or tofu.
A well-stocked spice rack too! If you're not familiar, learn to use spices. They can add a lot of flavor without the calories.
Honey is great too. I don't really
eat it too often, but I take a teaspoonful a day along with my vitamins and I swear it helps keep my allergies under check.
Oh, yeah. And coffee.