https://www.babble.com/home/how-to-m...e-backpacks-2/
My kids like this type of back packs. My teen son also likes messenger bags. You can make some out of recycled jeans or camo wear. A lot of time kids come with nothing or ill fitting clothes and shoes and or no winter coat in the heart of winter. Bless you for taking this on. Even if everything doesn't fit and the rest has to go in a garbage bag this will atleast help.