Creative hanging storage - school supplies organization from A Bowl Full of Lemons. Also the ultimate space saver! Using a shoe over-the-door storage hanging bag, you can place all your school supplies in individual pockets, categorize and label them.
Milk crates zip-tied together on their sides so that a bench seat fits on top and red bins from Lowe's can slide inside them. I don't have any milk crates, though. I also don't know what "zip-tied" means. I would use different colors.