Peanut oil can be processed into glycerol, which can be made into nitroglycerin, an ingredient in dynamite.
The Art of the Animated Series says that Aang's asymmetrical robes are inspired by Sholin monks.
The Boulder and Hippo were the first two competitors in the Earthbending Tournament in The Blind Bandit (2006).
The writing on Sokka's maps say, in order: "The First Nation Royal Map," "World Map," "Map of the Entire Nation's Land and Sea Territories," and "Capital Island Map."