Toph's bracelet



Toph's bracelet is a small piece of meteorite shaped in a semi-circle that Toph wore around her arm. It is a leftover piece of the meteorite that Sokka used to forge his sword. He gave it to Toph, thinking that she might like the opportunity to bend "space earth".

History
Toph kept this special earth/metal hybrid handy by disguising it as a bracelet she wore around her arm. She could bend it into any shape she wanted, including a star, a spiral, and a key for picking locks. In most situations she wore it around her arm where it was easily accessible. She apparently treasured it dearly as she was sure to remove it before pulling her last scam with Katara, afraid that when she was arrested the guards might confiscate it. Toph also utilized it to unlock a chest which contained Hama's whale tooth comb and again to free the hostages taken by Hama in the mountain.

Toph wore this bracelet again during her stay in the Black Cliffs. She kept the bracelet even after the end of the Hundred Year War when she started the Beifong Metalbending Academy, wearing it under her right sleeve. She came to notice that the bracelet would sometimes shiver very slightly when she was around select earthbenders when they became "super emotional", and theorized that they might have potential to become metalbenders. This realization led her to recruit those people and test their capacity for metalbending.

Trivia

 * One of the shapes into which Toph formed the bracelet was the then-current Nickelodeon logo.