Place a sheet of paper over the rubbing plate and rub with the side of a crayon to reveal the pattern underneath. Color in the details with markers or colored pencils. Fill with or press into modeling clay. Great with papier mâché! Make sun catchers using white glue and food color. Simply fill a rubbing plate and let dry. Peel the resulting mold off and you are done. Plates measure 7" x 7" (18 cm). Each pack includes 6 rubbing plates and an idea guide.