Children do come home hungry and would eat an entire meal if allowed. For cost if you really wanted to you could probably make hotdogs for the cost of the crackers and fruit - at least it would fill him up better. But the kids also need to be reminded that this is snack and not a meal. It is not intended to make them feel "full" but intended to tide them over from the grumblies till they get home and have supper. Serving things like carrot sticks, toast and peanut butter - things that take longer to eat ie more chewing usually satisfy longer. But once snack is served - the apple and granola bar is sufficient - that is eat till they go home. Mine do not get anything between snack and meals so if the after school kids you have were there as preschoolers then they may just have learned a bad habit - if I ask I can get crackers. But the cost of feeding schoolagers compared to what parents will pay for the service is the best reason to get out of doing it.