DIY - Sharpie Coasters, ceramic tiles (free or very inexpensive at any home store center), rubbing alcohol added with a straw or eyedropper, (for the colors to mix) -- Great inexpensive gifts! PLEASE, if you are doing this project, see the site for full instructions. We found that by adding more alcohol will blend the colors & your 'coaster' keeps morphing - did this until we were very pleased with the results...