A friend of mine gave me whiskey stones as a gift. They're great. If you have a whiskey that you'd like to cool down without watering it down you simply toss a few of these perfectly shaped soap stone squares into the glass for a few minutes. Soap stone is a truly enjoyable material too.
This video about Teroforma's whiskey stones by Galen Summer is great. I hope my whiskey stones came from this guy.
/via Coudal Partners.