I think this is a great idea. If you have the skill or pattern/ design to make it as detailed as this one is. Great idea for a rock garden, literally.
Katie Loves …a plant for those who lack any sort of green thumb. Paint smooth stones to look like cacti and nestle into a planter just the same. No watering or sunlight required. Photo: El Nido de Mama GallinaSource: A Painted Plant For The Gardening Impaired