Being a so called "green event" I had many folk that were open to the ethics that free software provides. As such I pushed that angle. I had my imac running Debian main, and two netbooks running Blag. During the weekend I met many folk, from Microsoft employees, free-software developers, and Ubuntu users (many of which did not know what free-software was!) I made a few converts to the idea of free-software and some folk said the will try Blag or Debian. I also talked about digital iceage, vendor lockin, open standards, and web2.0 and WebM amongst other things
Here are some pics:
Our poster :) The four freedoms were regarded as very cool as was the fact my old imac was still running an up to date OS
The festival was on a large spread out site, here's a little bit of it.
Away from free-software I also made a smoothie maker bike for some friends. It made over 250 over the two days.