Both suggestions have their merit.
For @NP5 : I think cutting it away with a Boolean would be an interesting method. I was thinking of cutting it just before the middle of the e and then mirror it into a small square box.
The period? I don’t know to tell you the truth. All I know is that it looked liked like it would fit my idea. Old or new, if it fits, I take.
For @FedPete : Cute Cube .
I suppose one approach it so that each side is very unique. This seems particularly good for quick screenshots, but what about for game design? Of course for static objects this would be acceptable, but for maneuverable one?
In general, had I built a smaller box and then doubled it or mirrored it I could have made a modular box set that could be used to build larger boxes.