First up, our guest room closet that also doubles as a linen & other random things storage closet. Before the redo, this closet was nothing but a space piled high with stuff that couldn't be seen or found... & if you did manage to find something, it was wrinkled or broken due to the mess.
Now it's an organized little beauty!
I used plain white gift boxes (CVS babyyy) on the new top shelves to store things that we want to keep but that don't really go in a file cabinet... random things like old letters & notes, ticket stubs, product how-to booklets, etc. I labeled them using little metal book plates, kraft paper, and pink brads.
White storage cubes from Target - kind of annoying to put together, but super cheap & worth it to me! I hot glued mini-clothespins to each cube to attach the circle labels. Ooh the joy of being able to actually see the stuff I have!