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Thanks @orkin420 blaze it!

What is poi?

its a flow toy... Its what appears to be being spun in your image

https://en.wikipedia.org/wiki/Poi_(performance_art)

Poi (performance art)
Poi refers to both a style of performing art and the equipment used for engaging in poi performance. As a performance art, poi involves swinging tethered weights through a variety of rhythmical and geometric patterns. Poi artists may also sing or dance while swinging their poi. Poi can be made from various materials with different handles, weights, and effects (such as fire).

thanks wikibot!