I saw this silhouette on Clker and it caught my eye. I adjusted them a little and created two versions. One is attached to a ring and the simple file is just the two silhouettes.
The download is a zipped folder with svg files for use in either version of SCAL. These files are for personal use only. Feel free to link to this post, but the files are not to be shared or distributed in any way.
Download the files from here.