The Brrrr Ice Cube Tray from London-based Black+Blum is a freezer-dwelling polar bear, designed to churn out pristine ice cubes. Simply fill it like an ordinary water bottle, replace the cap, and freeze it. When you’re ready to chill your drink, give it a light bang on the counter, remove the cap, and shake out the ice. Untainted by your hands or particles from the freezer, those cubes couldn’t be purer if they fell off a glacier.