It was fun to do, but messy. I think using an embossing heat gun would be better than a hair dryer. The hair dryer splattered the melting crayons. I did one with red, pink and purple crayons and masked out a heart with tape.
Alcohol Inked Tile Coasters - 25 Decorative DIY Coasters You'll Be Proud to Show off . SourceIf you look at the finished product, you would never guess that these are DIY coasters. All you need are some tiles, rubbing alcohol and alcohol ink!