Moving from the USA (Zurich)

Hi, we are an italian-french family of 4, moving from Minneapolis MN and we'll be relocating in Zurich for the next 2 years or so.
Our 2 girls, 8 and 6 years old, after 4 beautiful years in the States would like to get in touch with american children in Zurich or join sports clubs/association where also american would go. They have been playing soccer for the last 2 years and they were into Girls Scout, but they would be willing to try any other sport/activity.
Please, americans, help me if you can!
Thanks and best