I used the stick that you see in the picture as well as my fingers. I tried several other items, but they were not successful. I didn't realize that it was so difficult to draw on rock. I also used honey mixed with the outer shell of black walnuts that I have from my walnut tree. This picture depicts Chris and I as well as our three dogs. I wanted more color but everything I mixed with honey just looked brown even the black walnut wasn't really a deep black as I had hoped.