Cool Science Ice Tray
If a smart drink is loaded with nutrients to enhance mental capacities, shouldn't the ice in that drink do its part, too? With the Kikkerland Cool Science Ice Tray, you can float several different mathematical symbols, from representations of Einstein's Theory of Relativity to an infinity sign in your very smart beverage. And there's a question mark ice cube form, as well, for when things are still in the experimental stage. With 13 shapes, this food-grade silicone tray can also be used to make gelatin or candy.