I packed lunches for my kids through their senior years in high school. Why would you try to make another mom feel bad for packing her kids' lunches? Some of you really need to stop and ask yourselves why you are so damn snarky. Of course we know our kids could pack their own lunches. Sometimes we do things for others because WANT to, not because we have to.
To answer the question- my kids loved it when I packed leftovers from the night before! They also liked sandwiches, pizza, bagels with peanut butter or cream cheese, fruit, hummus and pita....... And of courses, something sweet!