Trident

The Trident was the tool used by Turaga Nokama. It was made out of Makuta Fish bones during her time as a Toa Metru. Upon becoming a Turaga, she used it as her badge of office. In the first Bionicle game for Gameboy Advance, it could launch balls of water at enemies, but they seem to have no effect.

Nikila had a trident. Teachers of Ga-Metru did also.