I know this probably goes against one of the Gridfinity Design Principles by keeping the bits in the tubes (less accessible), but in fairness, this is my backup screwdriver \_(ツ)_/
The screwdriver and tubes sit at an angle and have just a bit of an overhang so that you can grab them easily.
This takes up a 2x5 hunk of real estate in your Gridfinity grid. All of the items also sit below the upper flange so you can stack more Gridfinity blocks on top!
The author marked this model as their own original creation.