This is a potential starting point for the 2010 Free Culture Research Conference Logo Design Contest. This excellent design was created by Robert Martinez.
This logo design is inspired by fractals and snowflakes. They are unique and represent abundance. The concept behind free culture is like a fractal and similar to much of the work done by the community on openclipart.org, where work builds on itself continuously and is posted with that intention. I think it's a strong metaphor for the event's focus.