Khashabiyya Shia
The Khashabiyya Shia (named for their exclusive use of pieces of wood as weapons in their revolt against the Umayyads under the leadership of Al-Mukhtar) are an extinct subsect of the Zaidi branch of Shia Islam. They originated as followers of Al-Mukhtar and hence would have been expected to be categorized under the Kaysanite Shia sect.