You can fix this drawer with the bracket direct under your workbench. The drawer is designed for all the allen keys and the wrenches you have received with your new MK4 printer and offers space for a brush and needles to clean nozzles.
If you need any tool pull the drawer out of the bracket and selcet what ever you need.
You need some support material for the drawer rails.
I have designed it with Fusion 360 and have printed the two parts on my MK4 in PETG.
The author marked this model as their own original creation.