I couldn't do with out our Ikea cubby bookshelves. I know that really isn't a school supply, but that is what turned our room into our school room, it is what holds all our text books, our work books, all the other school supplies. Anything we need for school or any other project will be found in those 6 cubbies. Okay for a 'real' school supply, it would be my printer. I am ALWAYS printing something out for school.