We had a WebGL hackathon a couple months ago; it was a lot of fun and we were super impressed by everyone who came.
As the hosts of the event, we knew we had to do something really good. Something that everyone can use. Something where 2D just won't do it justice.
Introducing the Pooperator, an interactive 3D poop:
Good poop == good health. Caretakers, dog-walkers, baby-sitters, etc. can track and communicate the health of their charges. Track down allergies, bad eating habits, and illnesses.
Make logs with friends! Compete for longest streak of firm poops. Leave poops on their Facebook wall.
Here are just a few of the future features:
Have other ideas? Check it out on Github: https://github.com/floored/pooperator.