I was searching for more Child friendly restaurants - come accross and thought to share some of my findings as well

There's one Swiss / German style restaurant located at Katzensee, called "Waldhaus Restaurant" - it has a small playground outside. There's even a mini train open next to the rest during Summer time (only in weekend though) - kids loved it..even adults (me for exmaple). The playgroud has all kind of stuff such as bumble car ride, horse riding and etc...but of course you need to pay CHF1 for each time

http://www.waldhaus-katzensee.ch/

There's also the Rolli's Steakhouse in Sternern Oerlikon - really kids friendly. Steak is very good, and the owner will even allocate a corner for you and friends with kids if its possible - just make sure you made reservation as it is very popular even among swiss

http://www.rollis-steakhouse.ch/