devides small drawers into smaller bins. Unlike the slide in walls that come with them these don't allow small parts to slip under the walls.

Some of the printing bins have a flat surface to put a label. Or if you don't have a label maker. you might put some tape on the flat surface to give it a sooth surface that does not bleed on the weld lines.

Another hint is for the small bins is use a magnet to remove small screws.