The 45 degree sloping bottom divides the glass in two triangular sections. When the glass cup is filled with water, the top section becomes a water prism that allows passing sunlight to project a rainbow on whatever surface it rests on.
Somewhere in a parallel universe lies a civilization of that just escaped from earth. I swear, I’ve lost at least 20 umbrellas in my life. They just vanish, apparently. Because now designers got together and cr