Leonardo invented the tank, the helicopter, the double hull, the hang-glider and made major advances in astronomy, geology and physiology, as well as painting the Mona Lisa and The Last Supper.
More importantly, this...
his 'Vitruvian Man'
is one of the earliest examples of basic poi spinning and mechanics.
Of course, as he did not find time to invent the cotton stripy sock, his inspired work does not feature actual poi. That's why it's basic
Note the square around the figure in question, clearly demonstrating the concept of planes.
Next, note the perfect circle around the figure, a single, long arm spin in the front wall plain.
Interestingly, the two different positions of the arms suggest an attempt at a long arm butterfly, maybe even a stab at opposite-way flowers. Obviously, during the Renaissance, poi spinning was limited to large, basic arms movements.
Maybe it was Da Vinci's heavy robes restricting the movement.
Finally, notice the inclusion of nakedness. Clearly, even though actual technique is sadly lacking, it seems the need to divest ones' self of clothing was already deeply ingrained in spinning culture.