I created this generative illustration of plants and shapes.
I kept the paths as simple as possible and then transformed them using SVG filters (feTurbulence and feDisplacementMap) to make them a bit more uneven and distinctive. I'm picking a hue for the whole illustration and using different variations of saturation and lightness for the shapes to keep it kind of monochromatic.

https://codepen.io/natszafraniec/full/ZELvOOX