When I make an effort to bring a particularly light and healthy lunch, I'll pack a big salad with a little bit of vinaigrette dressing on the side. I tend to make the salad just out of whatever is in the house. Some for of lettuce, tomatoes, cucumber, carrots, peppers, apple, nuts, mushrooms, leftover chicken, or whatever else we have. And I bring a slice of whole grain bread with some strong cheddar to go with it just because salad alone never seems to keep me satisfied for long. Then for mid morning/afternoon snacks I'll bring fresh fruit and/or lowfat yogurt.