Dorje

The Dorje is an Air Nomad object that was most commonly used in rituals.

History
Air Nomads used to use the Dorje in unknown rituals. Meanwhile, Avatar Aang and his friends used to play on these objects and found that, if spun at high speeds, the Dorje could go out of control. Later, the Dorje's were put to a more sinister use: the Fire Lord, Sozin, had used Dorjes and various other objects to lure Air Nomad survivors of the Air Nomad Genocide into caves, where they would then be killed by the Fire Lord's waiting soldiers. Using this method, Sozin killed the remaining Air Nomads.

Later, the Dorje would later be used by Aang to defeat Zhao in these very same caves when he was lured in using the same method Sozin used to kill Aang's friends.

Description
At each end of the Dorje are two ball-shaped sections that are hollow and have a spike on top. In the middle is a metal band that is stood on by an Air Nomad user, where they would spin the object at high speeds. It should be noted, however, that this use of the metal band is only shown by Aang when he is using it to defeat Zhao. It is possible that this is not the correct use.

Real World Connection
In the real world, the Dorje is a ritual object and a small metal weapon. it symbolizes the firmness of spirit and spiritual power. The Dorje also has the same symbolic nature of the diamond: it can cut anything, but not be cut itself. The thunderbolt is also symbolized by the Dorje (irresistible force). However, in the show, the Dorje is significantly bigger than Dorjes in the real world.