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.
Peeling An Orange, Like A Boss. Cut or pull the top and bottom circles from the orange/tangerine. Then slit between two sections and roll it out. It does work, just have to make sure you make the circle big and pull the white center out, but it does work.