I really appreciate the design from deweycat, but it does not fit the SAMLA box I wanted to use.
This design also includes a stick to stack the trays without having to put them on top of the miniatures. It is high enough (more than 55mm) even for the men with pikes from Pike&Shotte. You can put the lid on with these men on top.
Unfortunately this will not fit small printer surfaces, the dimensions are 159 x 230mm.
There is also no need for a sheet of wood, this tray is sturdy enough even if fully loaded with zink miniatures.
~~I will add a tray for 40mm round bases in a few days.~~
Update 15.12.19: Added the tray for 40mm round bases.