Recursive Drawing is really fun to play with. You can make spirally-looking things like

and

(which is a minor variation that looks more feathery). Or you can make more organic looking shapes like

or

This tool was a student’s degree project and doesn’t have all the bells and whistles you’d expect from a mature drawing program, but the one thing it does well, the recursive drawing, is super cool.

(#krcubia) @prologic@twtxt.net Oh yes, this isn’t my student and he has a video on this page about how it works. So simple but amazing.