We have one of these and someone put a piece of a popsicle stick and wrote "Rock Concert" - Love Rock Art.Garden Trinkets - Awesome Ideas, Projects and Tutorials! Including, from 'instructables', this creative 'garden thing' project with rocks.
How to make a modern hypertufa planter to use outdoors in the garden - perfect for succulents! Use concrete ready mix. plus organic matter (for hypertufa):such as peat moss, cocoa husks, wood chips or sawdust