My daughter tends to take cereal with a banana for breakfast most days. Every once in a while we treat to McDonald's pancakes. When she eats here at home, I buy the frozen french toast sticks, pancakes, waffles and even the instant Quaker oatmeal.
Lunch she enjoy the little heat ups (you can get them for 88 cents at Wal-mart), a peanut and butter sandwich, bologna and cheese, sometime's plain cheese, or a lunchable.
Snacks: canned fruit, fresh fruit, Whales (they are like Goldfish, only cheaper), peanut butter crackers, Utz chips in the snack bags (1.19 @ ShopRite), Little Debbie Brownies, Sensations by Tastykake (they are sugar-free), animal cookies, or baby carrots--to name a few. I try to put a sweet and a fruit. The school has her eat her main food (sandwich or heat up), then her fruit, then her sweet.
Hope this helps.