Liz Hickok likes to recreate cities out of Jell-O and has been doing it for four years now. She's fascinated by the colors that are possible as well as the fact that it degrades in interesting ways. Watch this video to see how she goes about planning a recreation of the Mission District (woo-hoo!) in San Francisco with Jell-O.
This reminds me that I need to get on with my own Jell-O project. I'll definitely be rewatching this video for help in the near future.