Recent studies show that many chemicals used in commercial soaps can actually be harmful for your skin, causing allergies and all sorts of reactions. Because of that, a growing number of people are becoming interested in learning how to make soap at.
I know I've pinned this here before - Moss Graffiti. Just mix some moss collected elsewhere with yoghurt or buttermix in a blender and apply with a brush to a textured/porous wall like brick or concrete. Spray with a water mister if the weather is dry.