With a certain sports event coming up, and the official logo being heavily policed, I decided to design my own:

Image shows five interleaved copyright symbols, each being a circumscribed letter 'C'. They are separated into two overlapping rows, with three on the top row and two on the bottom. The bottom two characters are positioned between the top two. From left to right the colours are a purplish-blue, yellow, black, green and red.

This work is licensed under a Creative Commons Attribution 3.0 Unported License.

Download as SVG, 1024px PNG or 480px PNG.

I like my design, but as I was preparing to upload the graphics I saw that Lisa Ansell had a similar thought. Her version is also freely licensed.