I found a few hours while I was in Key West, Florida this last week to read up on Backbone and do some experimentation. This is the result: http://benkeen.github.io/spirograph/

It’s a simple little app to generate spirographs. I know, scarcely original, but I always liked Spirographs + wanted to see how the math works. Turns out it’s frickin’ hard.

Warning: it’s buggy! Just a proof of concept. I’ll be returning to Vancouver in a couple of days and I’ll finish it up then.