I've been playing with the designs of glyphs for a duodecimal number system, also known as dozenal, base-12, base twelve, and uncial.
I'm not a font designer, but here are my sketches of the current frontrunners among the tiny baseTwelve community in the Dozenal Societies of Great Britain and America:
These digits represent ten and eleven, respectively.
And here's my sketches of my own design and personal choice:
My sketches are by no means the only suggestions out there. But I happen to be the one posting this post, so I'll naturally put in my favorites.
What I want from you is, well I guess this is sort of an advertisement to make you aware of the need for duodecimal glyphs. Think about it the next time you're designing a set of numerals.
I'd also like to test the waters and see if anyone here has preferences for one symbol over another, and why, or why not.
As for actual use, for now I guess these would go in the personal use area of Unicode, if I knew how to do that. In the ideal future, I'd like to see a small block of Unicode set aside for base-12 numerals, as well as special hexadecimal characters.