This is a screwdriver bit tray for big bits like those we use on airplanes etc, I designed two trays, one with a bottom and one without, for the second one I am going to use a magnetic bottom to keep the bits in place.
No support is needed, infill 25%.
Holes are not super tight, half a mm wider so I can pull the bits with one hand.
I used Vectric Aspire and Fusion 360 to design the vit trays.
Enjoy.