create your own favicon
You can make and publish your own favicon under a CC licence. Even the link is very CC:
A favicon is the little icon at the left in the box where you fill in the url, or the little icon in the corner of a tab. It's very easy: draw an icon, then download it for your website. If you want to publish it, you have to register, and then you can chose the CC licence. You can also upload an existing image, drawing, picture up to 4 mb, and Favicon will make you an icon.