Laundry Basket in Closet. No need for hampers and can take it straight to the laundry. what a great kids closet! Do 3 baskets, white, colors and darks. Also get different color baskets so kids can sort.
DIY: PVC Pipe Shoe Storage - so fun and so simple, could easily spray paint or cover in fabric or paper too. maybe a horizontal layout of two rows or something. I think this would be good for garage "yard shoes" storage