I made two sets of ice cubes for friends for pre-dinner drinks. It was difficult to fill the tray with water and carry it to the freezer since the tray was too flexible. Most of the ice cubes broke when I tried to remove them from the tray, especially the Star Ship Enterprise, the Vulcan salute and the Delta Shield. I and my friends were truly unimpressed. If anything, the ice cube tray is for show, although not very attractive for show.