Creative Kismet posted an awesome tutorial over at her blog on how to make skull beads without a mold and using a broken pencil tip to create the eyes, nose and teeth in polymer clay then paint the features with black acrylic paint.
The awesome clipart to the left is free from http://www.rottentoons.com/skull-clipart.php
and they have several other free cool skulls for (non-commerical use only)
