The International Food Information Council suggests:
A medium apple with skin, 3.7 grams of fiber.
1 cup broccoli, boiled, 4.5g.
1 cup brown rice, cooked, 3.5g.
1 medium raw carrot, 2.2g.
1 cup boiled red kidney beans, 13.1g.
1 medium oat-bran muffin, 5.2g.
1 cup cooked oatmeal, regular, 4g.
2 cups air-popped popcorn, 2.4g.
Two slices whole-wheat bread, 3.8g.