This box matches the Stacking screw and tool boxes but instead of a solid base, I've used a grid of 1.6 mm i.e. 2 perimeters at 0.4 mm nozzle so that it prints quickly (about an hour at 0.3mm layer height)
Insert a piece of card/paper (195 mm * 95 mm) into the base before use.
There's a SCAD file it you'd like to play...