Keep that beautiful single malt scotch cool, without watering it down. Whiskey stones work like ice cubes, but they don't melt & they're forever. Put them in freezer for a few hours & pop a couple into a glass of your fave beverage. Rinse them off & repeat. 9 stones with a muslin storage bag. By Teroforma ~$18 & free quick 2 day shipping with Amazon Prime.
Available at amazon.com