DD13 is an adventurous eater. Some of her favorites:
California rolls
Noodle salad (mix in tofu, edamame, assorted veggies, use wholewheat pasta)
Black bean wraps with grilled corn, havarti, sprouts, greens and avocado
Turkey bacon blt wrap
Chicken breast and havarti wrap
DS6 is very picky. He is also in a peanut free environment. Some of his favorites:
Amy's Mac and cheese in a thermos
Sliced ham rolled up and skewered with a pretzel stick (idea stolen from the sample lady at the deli)
Chicken and rice in a thermos
Gardein chickn tenders (he doesn't realize they are veggie, and he loves them, so

)
I buy larger jars of unsweetened applesauce and put it in single serving containers. Peas make a good lunch side at my house, as well as yogurt (I blend plain greek with fruit to keep sugar down, then freeze in single servings which are thawed but still cold by lunch).
I love some of these ideas too! We start back this week and I am trying to figure out if I have any containers and lids that match (even though I have a ton of each, just nothing that fits together, lol), so I'm going to check out Marshalls and HomeGoods - thanks for the tip!