Rubeezby Crayon Rocks are eco-board templates that add texture and creative possibilities to crayon art projects! Use under paper like a rubbing. Use them UNDER your paper like a rubbing. Use them OVER your paper like a stencil. Eight (8) different designs offer endless creative possibilities. Each board is 6 x 6 inches square. Compostable! When you are done with them, let 'em rot in the garden.