Firestaff

A firestaff was a tool that was used by mask and tool-makers in Ta-Metru. The tops of the staffs could reach extraordinarily hot temperatures, allowing Ta-Matoran to use one to weld and shape Kanohi. Vakama used a firestaff to make masks when he was a Matoran and kept it after he became a Toa. He used it to craft the Vahi for Teridax from the six Great Disks. Vakama also continued to use his staff as his badge of office after he became a Turaga. Turaga Dume owned and used a firestaff as well.

Bohrok Va
Tahnok Va also used firestaffs, in both offensive and defensive ways. They also used them as a light source though the dark areas in Mata Nui.

The Firestaff later became useless when the Tahnok Va, the Bohrok queens, and the rest of the Bohrok swarm return to their slumber after cleansing Mata Nui (which was one of tasks that the Toa Nuva had to do to awaken the Great Spirit).