First uploaded cart... only took me two years to get around to it.
This started out as a single chain. I read something on here (sorry, can't remember who by!) about cloth simulation and pulling both ends, and this is what I came up with. Not really cloth simulation, but I am still amazed that simple rules can create something so fluid-looking. The "wiggle" was mainly added to stop new links getting stuck, but it makes the whole thing look as though it is underwater.
I'm not planning a jellyfish-based game. Yet.