Not to be confused with Ice Cube (Pet).
Ice Cubes are Common Items that can be used to upgrade the antenna and unlock the Crystal Cave. Ice Cubes can be dropped by Frost Spirit and Snowstorm Ghosts in the Winter Tundra. Players can burn Ice Cubes at the Incinerator in the Junkyard for 8 Flames each. They can also be converted at the Backdoor Gumball Machine at a ratio of 50:1 Gum.