I wanted to be able to add more sections for miniatures and the existing remix coupler piece isn't deep enough.
there are 2 sizes. the smaller one works great for minis laying down. the larger one should let most minis stand up. (28mm)
Also, the larger section will hold 2 sets of standard polyhedral dice (might need a bit of shaking when you close the lid but they definitely fit)
I printed this with AIO robotics PLA at 200.
supports - zig zag, 15% support density, interface with 75-100% density, overhang 75deg
2 walls, 10% infil, print SLOW