Potato cookie stamp

Cut a small raw potato in half crosswise. Using a pen or marker, sketch out the design of your stamp. Remember — everything will be reversed, so if you’re using letters (like R.I.P., for instance) make sure you sketch them out backwards so that they’ll come out the right way.
With a very sharp knife, cut around the letters or picture — leaving the part you want to show raised, the rest cut away and discarded. You may have to practice on a couple of potatoes until you get the hang of it — fortunately potatoes are cheap. While this is a great effect for gravestone cookies, you can also do this with other holiday designs at other times of the year.