Leave it to Japanese bartenders to take cocktail making to a whole new level. The Ice Ball Maker ($294) sold by The Japan Trend Shop makes perfectly circular ice cubes. To make it work you place the device in some warm water, once it’s heated insert your ice cubes and let gravity do the rest. When complete you’ll have the perfect ice cube to keep your drinks chilled. The one priced here is for the 30mm (1.2 inches) mini. There are additional sizes available but they get pricey real fast. For example, the next model up is the 55mm version and it runs $1036.