Eight-year-old Tom Wuestenberg plays with a fidget spinner in a park in New York on May 23, 2017.  It was supposed to calm nerves, relieve stress and improve concentration but the new-anti fidget toy spreading fast through US and European schools is whipping up anger among teachers on both sides of the Atlantic. Just months after the 'fidget spinner' first whirled its way into the hands of antsy youngsters, some schools have already banned it -- sparking a debate about difficulties children experience concentrating.  / AFP PHOTO / JEWEL SAMAD        (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
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