1. Place the pills in a softly rounded, ceramic bowl glazed or polished to a non-porous surface. Using a stone or ceramic rounded mallet, crush the pills against the side of the dish with gentle pressure and a circular motion.
  2. Fold a weathered bill in half and place the pills in the fold, under the top half. Use a smooth stone or the blunt edge of a lighter and run it across the top of the bill with strong pressure over the object underneath, crushing it.
  3. When grinding just a few pills, you can simply place them on a plate or other hard, rimmed surface and apply pressure to them with the back of a spoon.