In 1996 I experimented with a calligraphy marker and made a bunch of letter-ish shapes, which I eventually developed into a whole alphabet. I call it the Midoran Alphabet.
I really ended up liking most the shapes that had odd symmetry, where it’s rotationally symmetrical about an axis at the center of a letter stem instead of mirror-symmetrical (even symmetry).
Letters in the English alphabet with even symmetry: A, B, C, D, E, H, I, K, M, T, U, V, W, Y.
Letters with odd symmetry: N, S, Z.
Letters with both even and odd symmetry: O, X.
This alphabet has come in handy for me many times. It’s useful for writing down my passwords and password hints, or any communication that I want to casually hide.
The alphabet is not too complex, so someone smart who knows ciphers a bit could probably figure it out, if they spent enough time. But I have encountered no one that I know of who would even want to bother.
Below are the pages where I was doodling and working out my ideas on paper, just getting a sense of what I could create and what I liked.
Alphabet doodles page 1
Alphabet doodles page 2
Alphabet doodles page 3
Alphabet doodles page 4
Alphabet doodles page 5
Alphabet doodles page 6
I have also created two versions of a font so that I could type in this alphabet, called Midoran and Midoran Prime. Below are images of sample text in each of them.
Midoran font example
Midoran Prime font example