School chair pockets

Back in the day, desks and chairs used to be one single unit with space inside the desk for students to put all their books, notebooks, pens, pencils, lunch and whatever else inside. These days, the majority of classrooms feature separate desks and chairs with school bags needed to go under the seat or desk, which is why school chair pockets are so convenient. Simply slip one onto the back of a chair and you have organized space to fit notebooks, text books, writing instruments, binders and even laptops if need be.
School chair pockets:

School chair pockets example. Pictured: Seat Sack – One Size Fits All – Fits 12-17 inch Chairs