I've been hammering away at a Common Lisp library for
SVG. Last week I decided to take a break from studying the arcana of clipping windows and alpha masks to see if I could translate some of the gallery examples from
NodeBox into SVG nicely. My library isn't ready for
Graphic Cellular Domestication — that'll take Javascript — but some of the random walk ones turned out ok:


I quite like my modification of the tendrils algorithm, if I do say so myself:

Of course, SVG isn't recognized as an uploadable image format many places, so the pictures are PNG.