When they bring them in do they just bring them in bags and you sort or do you have them sort. I hate going through bags so I'd like them to sort. The kids are a little too young to do it themselves, but I'd love the parents to go through with or without kids and sort. i thought about making signs for each supply so I can atleast have a pile of kleenex, a pile of paper, a pile of crayons. What do you do???