D&D Gridfinity Cupholder

This is my first design, so be gentle. My major project right now is I’m turning this poker table into a D&D table. One thing I knew I wanted was cup holders for everyone. I was shocked that I couldn’t find a good Gridfinity Cup Holder on any of the major STL sites (found some, but wasn’t impressed, and really wanted to cram some D&D features in this so let me break it down:

a 3x3x6 Gridfinity Bin
2 sizes of cup holder using a similar design as what a lot of cars have in them. The inner ring holds cans and the outter ring allows for a standard coffee mug. I drink out of 32oz deli containers a lot and they fit perfect.
Pen Slots, will hold most pens and highlighters. A little big for pencils but they fit and rattle a little.
Dice tray. I tried a lot of designs for this before settling on a deep try. I really wanted a slot for each but they were just too close together to fit 7. Still, I like the tray because it makes it functional for more than just D&D now, you can just use it as a cu