While the fundamentals of ice don’t change—combine two parts hydrogen and one part oxygen, then chill until solid—the way we shape that ice is limitless. Sometimes these shapes serve a function, such as large blocks or spheres that are slower to melt and don’t dilute our drinks. And in other cases, odd shapes add a touch of whimsy to our glasses. Anyone can enjoy a cool beverage on a warm day, but here’s a chance to do it with some style.