Air Nomad shaving tool



The Air Nomads were known for having bald heads. The nomads used Shaving Tools to cut off all their hair on a regular basis. They used a curved blue and white razor which had the Air Nomad symbol on it. The shaving tool has only been seen being used by Aang in the episodes "The Tales of Ba Sing Se", when he was getting ready for the day ahead, and "The Day of Black Sun, Part 1: The Invasion", to expose the arrow on his head, which identified him as the Avatar and an Airbender. It is unknown if Aang used his Shaving Tool again.

Connection
In real life, monks shave their heads and faces to show commitment to their spiritual life and to discourage vanity, the same act holds for females (dubbed Nun) as well. In the World of Avatar it likely holds to this, but is also seen to be used as a way of exposing the arrow tattoo on an Airbenders forehead.