I accidentally created a pattern that somewhat resembles a fractal in a bug making Battlezone a few days ago. I have purposefully made fractals before in coding including the good ole' Mandelbrot set but this was the more common tree or neural net fractal that can regularly be found on Codepen.io...because it's pretty easy to code. Actually all fractals are...it's just recursion. Anyways I stumbled on this and decided to play with it a bit and I think the result is pretty good.
I also noticed a skull when I was playing with it so I used multiple instances to make a doodle of a face.