amen outsmart and bible student!
You give your children just 1 or 2 birthdays, give them a christmas or two and your kids will realize that heads are not cut off, EVERYONE at the parties has a good time (not just the birthday kid) and you will literally see the inner workings of their minds saying "THIS IS COMPLETELY NORMAL". It also has been mentioned to get your kids involved. ANY sports, dance, girl/boy scouts will work wonders on your childrens self confidence and teach them that all these things are perfectly normal.
I have been at it for about three years and my children could not imagine life without any of the above things even though their mother is still "in". I would even go so far as to say "doctrine" has nothing to do with it if you get them early enough. The simple fact that almost everything is discouraged will become wierd in THEIR mind and you cant ask for anything more than that. I would just recommend to not make the jdub life the forbidden fruit Dont bash it, just explain where it is deficient. (which is no small task)
Good luck (yes, I said luck and it doesnt have anything to do with magic or demons)
pbrow