This is a gridfinity compatible plug cutter holder. I designed mine to hold 4 bits that came in a Parkside set with the following diameters: 6, 10, 13, 16 mm. It takes up 2 gridfinity spaces. It was designed for easy access so that you can smoothly take one bit out and use it or take all of them with you.  I also included a notch for a 9mm Dimmo label. I recommend ironing this particular surface for better sticking of the label.

I left also available the fusion 360 file for easier editing/remix.