Diet foods?

kay, i know theses arent great for you but i munch through them when i diet because i tend to eat 500 calories a daytime, besides these foods, soup, pickles, diet drinks, jello light, does anyone know any pious very low cal foods? Veggies and fresh fruit - They are more nutritionally dense than most adjectives other foods. Many Vegetables are considered to be 'negative Calorie foods' as your body will utilize more calories to digest them than they actually contain.
fish
milk