Freezer Square Rounds are a classic, they are pliable, can be used in the fridge, freezer or in the pantry.
Dimensions of 400ml: 12.8 x 11.6 x 5.8 cm high
Tupperware Double Diner and Single Diner
Tupperware Freezer Mates Containers
Tupperware Ice Block Tray with Lid - Cool Cubes