10 Minute Upcycled Styrofoam Tombstone With a wood burning tool or serrated knife cut a piece of styrofoam into the shape of a tombstone. Fill in the lettering with black acrylic paint. Add some green and yellow paint for moss. Add a light coat of gray and black. Careful not to cover your lettering. Distress by dripping watered down acrylic paint along the top. Add a wooden stake to help stick in the ground (also to kill vampires). Display and spook your neighbors!