72 Pieces Slate Drink Coasters Click HERE for more information! PERFECT FOR LASER ENGRAVING AND ETCHING: You can personalize each coaster to reflect your personality or match your décor. Whether it's a name, a special message, or a unique design, the possibilities are endless. You can also write on them with chalk, painting with acrylic paints, art-mosaics or other. This DIY feature adds a unique touch to the coasters, making them not just a functional item, but a piece of art.