These painting rocks are going to provide hours of crafty fun for my Granddaughter and her friends. Remember the pet rocks from years ago? These will be perfect for those. They are in many shapes that will trigger great imagination. All had smooth surfaces that make for easy drawing and painting. Not every one is perfect, but nature isn’t perfect and this just adds to the creativity. These are a wonderful bright white so your designs will pop with color. I’m keeping a few for myself so I can try my hand at creating some mandala designs. Fantastic purchase!