As I mentioned in the last post I am working on an icon set that will be used in Toolbar Buttons as well as my other extensions. It is based on the famfamfam silk icon set. Except it will have more icons, all the ones I need that it does not have, and more sizes. The famfamfam set only has 16x16. Below is a preview image of some of the icons.

When I am ready to release the icons I will announce it in a post here. So stay tuned, and subscribe to the feed to keep up to date.