Fire Poi

Poi is a form of juggling 'Impartial Art' with balls on ropes, held in the hands and swung in various circular patterns, similar to club-twirling. It was originally practiced by the Māori people of New Zealand (the word poi means "ball" in Māori).

Women and men used it to increase flexibility, strength, and coordination. It developed into a traditional performance art practiced mostly by women. This art, in conjunction with others including waiata a ringa, haka and titi torea, make up the performance of kapa haka.

Fire poi is considered by some to be the "ultimate" performance poi, fire poi are constructed from chain, with kevlar wicks, sometimes also stuffed on the inside with more absorbing non-melting material such as cotton, that can be soaked in fuel and set on fire.
(Courtesy of Wikipedia)