You can snowkite beside one of the lifts in Fageråsen / Trysil Høyfjellssenter (which have excellent family and beginners pistes by the way). Ride up with the lift, ski down a bit in the piste and then rig your kite just beside the piste. Your wife and kids can ski this piste and have a look at you when you are snowkiting.
I have written about Trysil; for more info with pictures and maps over the snowkite area, see:
http://www.vindman.se/en/2010/03/hard-wind-in-trysil/