The Cupa-Rocks Ice frosted drinking glasses from Sempli's Ice Collection are a fun set of drinking glasses for brandy or whiskey. Rather than being able to set the drinking glasses down flat, each of the glasses come to a pointed tip like a spinning top. Although it might seem rather perilous to put down one of the glasses, they safely rotate on the spot, promoting aeration and improving the quality of the drink inside.
Whether you are holding the drinks or not, the motion from the crystal glasses will warm up the drink to the perfect temperature. The glasses are designed to contain about 60 ml at a time, so that there's no spilling when the glasses swirl themselves around.