I purchased a new USGeneral (Harbor Freight) Series 3 42" toolbox (top and bottom). The top toolbox has wide drawers on the left, and narrow drawers on the right.
This model is for a Gridfinity base that fits perfectly inside the narrow drawers. The Gridfinity base fits centered in the drawer and has fillers on all four sides. This is nice since the drawer has some clips inside where the sliders attach. The spacers will allow organizers to fit away from all four sides.
The drawer is divided into six models, 3 on the left of the drawer and 3 on the right of the drawer. I have made all fit the Prusa MK4 print bed. For the right side, you might be able to combine the models to make them print in one go.
The author marked this model as their own original creation.