Activities for Russian-speaking children (Geneva)

Hello, Everyone!
I have two little kids (2.5 and 4.5) and would love to find out about any creative, sports or fun activities for Russian kids in Geneva, Versoix or Nyon. Would also love to meet any Russian families with kids of more or less the same age! The kids actually speak German and French as well, but I would really like to keep the Russian going (it's their strongest language so far) and they really enjoy reading Russian books, singing Russian songs, etc. Any suggestions or advice would be highly welcome!!!
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