A human tooth from a fallen survivor.
Ancient Hawaiians fashioned necklaces with shark teeth on them to protect them when out at sea. Shark teeth have long been a symbol of bravery, strength, and protection. Killing a shark to obtain its teeth was no easy task, and if one was able to accomplish it, they had made a name for themselves. Several hundred years later, a crazed survivor, losing his mind because of the zombie apocalypse, decided to wear the teeth of the zombies and raiders he killed, as a symbol of his courage, his guts to kill another fellow human being, and his apparent insanity.
May be found in dental clinics, especially after a tooth extraction.