Roll a small amount of air-dry clay into a ball, then flatten it gently into a disc.

Smooth the clay to about half an inch thick using a rolling pin.

Select a cookie cutter or mold and press it into the clay to create shapes.

Poke a small hole in each stone using a skewer to hold the essential oils.

Place the shapes on a baking sheet lined with parchment paper and allow them to dry according to the manufacturer's instructions.

Add a drop or two of your chosen essential oils into each hole once dry.

If desired, paint or seal the stones to enhance their appearance.