I never know what do with items like Product Instruction booklets, extra cable cords, and CD inserts. I found a solution. Instead of buying the pricey plastic boxes, I use shoe boxes. I load items from each category into the shoebox, label them and put them at the top of my coat closet.
I keep Instruction Manuals in larger tennis shoe boxes, cable cords and the like in a smaller shoe box. I have custom sized boxes. They stack well and since they're items we rarely use but always have to keep around they're not taking up valuable kitchen or entertainment center space.