I just had a look at the 3D files on Texas ASL downloads, and they all look to be nice variations on the Raaco theme. The ones labeled from Ritterkrieg seem to be very good if you already have the Raaco A75 inserts and are looking for some customization at a low filament cost; the others are good variations.
I had made my own variation, with an added sliding lid that can help keep the counters in place (and can get some embossed text at slicing for easy content identification, as the opacity does make this step more of a problem. I had not cut a hole in the bottom to ease counter removal, this is a nice touch that I'll certainly copy in my next version.
In case anyone with a 3D printer has been following the "GridFinity" system of containers, there is a nice printable box that can be found
here (Prusa Printables site). The system organizes containers in multiples of 42x42mm with heights in multiples of 6mm; this is not quite optimal for ASL counters, but one can make a 2x2 grid for 5/8" counters in a 42x42mm unit, or a 5x5 grid of 1/2" counters in 84x84mm, and then you can make a 100% 3D printed box with its customized inserts. The box should probably be printed in PETG for durability; inserts could certainly use PLA (I am using PETG myself).
The box shown here (5x4 compartments of 42x42mm, height in 9 units of 6mm) will fit a complete German OB, with some room to spare; I believe most nationalities will fit in 6 units of height. Only the individual inserts are my creation, the box is from the Printables site; if there is interest for them I can make the inserts available, preferably in the .stl format instead of the source OpenSCAD format as I don't want anybody to ever see my source code.
One advantage of this system is that inserts are very flexible, as you can see I use a mix of single-compartment inserts (for infantry that comes in large quantities), or have each counter type in its own compartment for vehicles/guns/leaders/SW. I use either 2 or 3 units of height, both have their uses.
(Printing times are quite long, though. On my Prusa printer, the base for a 5x4x6u box, that is less high than the one shown here, takes almost 12 hours to print. Don't do this if you have to pay for time on the printer)