Here is the code I used to create my designs:
https://editor.p5js.org/bed294/sketches/_L_DRzrPz https://editor.p5js.org/bed294/sketches/mqoUxfecb
I originally tried to play with concentric circles that are randomly half filled. Then to create a more continuous tiling effect, I used tiles that are divided diagonally, and every third tile is flipped.
