Our goal was to come up with a project which represented our personalities, and used an Arduino. We decided to use a LilyPad -- but hadn't settled on anything else. A week went by, and we shot ideas back and forth over email. We wanted to have it make sound, wanted to have it have something to do with nature, wanted to keep it simple enough that we could actually implement it in the available time.
The idea of doing a wind chime thing came up -- the actuation is simple (just switches, no fancy temperature or humidity sensors to configure), so it seemed feasible. It provides nature, sound, and a nice form-factor in the LilyPad for that! But how should it work? Should it record the wind and play it back later with a button press? Should it transmit the wind knocks remotely to another place? Real time or shifted? Real location or shifted?
We got together, and Charlie brought some acorns; their natural beauty sealed the form factor of hanging acorns under the LilyPad. We decided to make the sound actuation real-time, but slightly remote (a speaker separate from the chimes), and to include a wireless module to upload the data to http://pachube.com