Use Turbo Mode (shift-click the green flag). This project creates a fern leaf, and it follows four instructions. It uses a Random Number Generator to select its next instruction. If you set the variable "Detail" to high, it will place a pixel in every possible place. If you set "Detail" to low, it will generate a new fern each time. If you press "See inside" you will be greeted with many variables that you can change, and this will create different fern shapes.
I discovered this on a Youtube video by Numberphile: https://www.youtube.com/watch?v=kbKtFN71Lfs I found the equations for this on Wikipedia: https://en.wikipedia.org/wiki/Barnsley_fern#Construction
