Per request in the forum, I put together this Widget to place an "eject" button on your desktop. It will open (and if motorized, close) your optical drive. You can name it, set the drive letter, tailor to your liking! Duplicate the .widget file to have more than one on your desktop! To move, hover over edge of widget and drag by the border when it appears.

[Editor's Note] To move this Widget more easily...
On Windows: Hold down the Control key, click and drag.