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PARIS, FRANCE - MAY 20: In this photo illustration, a child spins a 'Hand Spinner' on May 20, 2017 in Paris, France. The 'Hand Spinner' is a toy that sits like a propeller on a person's finger, with blades that spin around a bearing. Since a month the 'Hand spinner' or 'Fidget spinner', a whirligig from the United States has become a mondial phenomenon to the point of creating stock shortages in toy stores. (Photo Illustration by Chesnot/Getty Images)

PARIS, FRANCE - MAY 20:  In this photo illustration, a child spins a 'Hand Spinner' on May 20, 2017 in Paris, France. The 'Hand Spinner' is a toy that sits like a propeller on a person's finger, with blades that spin around a bearing. Since a month the 'Hand spinner' or 'Fidget spinner', a whirligig from the United States has become a mondial phenomenon to the point of creating stock shortages in toy stores.  (Photo Illustration by Chesnot/Getty Images)