Coolamari - Squid Octopus Ice Tray Make Coolamari octopus ice cubes for aquatic drinks. An octopus ice tray for octopus lovers. This silicone tray makes four charming octopuses for aquatic eight-legged fun! Your drinks will go down swimmingly well. A little octopus ice cube would look most at home in your squid ink Martini! Each octopus shaped ice cube will measures approximately 6cm / 2.5 inches long.