How do you make skull key chains?

To make skull keychains, start by selecting a material such as polymer clay, resin, or metal. If using polymer clay, mold it into a skull shape and bake it according to the package instructions. For resin, mix and pour it into a skull-shaped mold, then let it cure. Once your skull is ready, attach a keyring or chain to it, and optionally, you can paint or decorate it for added flair.