If you are putting together a theatrical play or stage performance, you can make the background look more realistic by placing a few props on the stage. For example, you can put faux rocks around a forest scene to make the forest look more natural. You can make an artificial rock out of a few basic craft supplies that can be found at an art supply store, such as paper mache pulp and acrylic paint.
Mash the corners and edges of a cardboard box to make it look dented and mangled.
Mix together 6 cups of paper mache pulp and 3 cups of water in a bowl. Use a spoon to mix thoroughly. Let it sit for about 10 minutes.
Spread the paper mache pulp over the cardboard box until it has a 1-inch layer. Let the paper mache box dry for a couple hours until it has completely hardened.
Paint the entire surface of the paper mache rock using a paintbrush with medium grey acrylic paint. Let the paint dry.
Sponge lightly over the surface of the rock with black acrylic paint.
Sponge lightly over the surface of the rock with white acrylic paint. Let the rock dry thoroughly.