I decided to mix it up a little bit and use letters instead of numbers on the rings. This makes it a bit more fun since you can spell out lots of different 5-letter words. You can also choose a combo that means something to you. There's still only 10 letters per wheel, so I strategically chose the letters to maximize the number of possible words. There's at least 80 words you can spell (that I've found), and there's probably much more than that.
I also included a blank ring in .stp format so that you can make your own custom ring in whatever CAD program you use.
As with everything I've every printed, these parts did not fit together at first. After some sanding with sandpaper, I got it to fit together nicely.
Autodesk Fusion 360