All three of my kids are going to preschool for the first time this fall (4 1/2 and 2 1/2 twins). All of my kids are rather petite so I'm wondering if anyone has any backpack recommendations? They will just be going to half day preschool with lunch at home. I'm thinking the tiny backpacks we have for the twins will be ok, but maybe get something that will transition to kindergarten for my older one? Recommendations on something that lasts but not huge?