So starting from that idea, I opened up sketchup and put together a design for mine with a few modifications: I liked the idea of the wood blocks “floating” with a little more empty space, and I wanted a separate tray at the bottom that the tower could nest into for travel.

I started with picking up a 2″x2″x36″ piece of oak from the hardware store, along with a 0.25″x 4″x24″ plank. I had some aluminum wood screws and 0.125″ acrylic sheet lying around, along with some green felt I had bought to line my toolboxes a while back. I unfortunately forgot to take in-progress photos along the way, but construction went pretty quick.

After cutting the general shape of the blocks on the miter saw, I sanded them down, glued together the ones that had touching faces, and drilled the appropriate holes to mount them into the acrylic walls. I used super 77 spray adhesive to apply the felt to the top to keep the noise down (I have a couple cast metal dice that can get quite loud).

UPDATE (2020-12-27):

After an unfortunate fall onto pavement, the thin acrylic sides developed some nasty cracks. So, Ive since replaced them all with Lexan (polycarbonate), which is far less brittle.