to cover in each lunch: whole grains, protein (such as meat and beans), fruits, veggies, and dairy (such as a side of milk). Bento boxes come in a range of sizes. Buy one that holds the amount your child usually eats for lunch at home.Fed up with Your kid's lunch will never be boring if you mix and match these ideas to create fun and healthy bento-box combos for school.Bento boxes come in a range of sizes. Buy one that holds the amount your child usually eats for lunch at home. Or go a little larger so he can eat his morning and afternoon snack out of the bento too.Serve lunch in the bento box for a week before school starts. That way, your child will get experience opening and closing the box. It will also give you a better sense of how much he'll eat so you won't pack too much food.The title characters from beloved children’s book inspired this fun-filled bento box. Your kids will be the talk of the lunchroom with these graham crackers topped with soy butter and cute bear faces made of blueberries and banana. Pair the mini brown bears with colorful fruit and veggies.