Magnetic : If the inside of your toolbox is full, a magnetic organizer can attach to its exterior, allowing you to attach magnetic tools to the outside of your toolbox.
These can come pre-cut by the manufacturer, or you can buy a foam roll to DIY your own organizational inserts.
Foam : Some toolbox organizers are foam sheets that lay in drawers and boast cutout slots for various tools.
They can hold wrenches, pliers, files or screwdrivers in an upright or horizontal fashion.
Rack : Organization racks are specialized metal structures that either sit in toolbox drawers or on top of the toolbox itself.
Some trays are even covered, allowing you to keep them inside or outside of your toolbox. They allow you to keep your screws in one part of the tray and your drill bits in another.
Tray: Kind of like the tray you keep in your silverware drawer to separate the knives from the forks, these trays are inserts that sit in the drawers of your toolbox.
In general, there are six different types of toolbox organizers, allowing you to keep each type of tool in its rightful place. These aids are built to hold your tools and small items.