The Pentacle is a major Altar tool that can be easily made from clay that can be purchased at any arts and crafts store.
1. take a rolling pin and flaten the clay
2. cut a circle from the clay and put all exess clay to the side
3. use a craft stick and inscribe a Pentagram on the clay circle
4. bake in an oven or a kiln until hard
When you make your own tools (or at least decorate them),you can put a little bit of your energy into the tool.