I continue to design and upload more symbols for MysticSymbolic, finessing most, deleting many. We now have a “Randomly invert symbols” toggle, which I recommend to get a nice balance of black and white. I also recommend a complexity setting of 2 (the slider goes from zero to “bonkers”).
Sometimes I take screenshots and name them. Here’s my latest gallery:
Omigod! I would love a set of (otherwise blank) greeting cards with images like these!