Hmmm, I'm more of a practical tinkerer really. And besides that I usually doodle around with pen on paper more than that I create those kinds of things...
Although I did make this a long while back:
lab.robertvanderelst.nl/random
With variations:
lab.robertvanderelst.nl/random lab.robertvanderelst.nl/random
And the now dorment Proforma plugin for jQuery (github.com/robertvanderelst/proforma) which took way too much time...
Still need to clean up that part of my domain though. Lots of crappy things there, haha