It's something I've thought about quite a bit.
I was raised around guns, not in my home, but by my grandfather. We had cap pistols, toy guns, and all that from as long as I can remember.
We had no real guns in our home as a child, my father wasn't raised around guns and hunting, and spent a tour in Vietnam. He wasn't interested in guns or shooting, though I later found out he was a very good shot. Sort of the "I said I didn't have any use for guns, I didn't say I didn't know how to use them" sort of guy.
My grandfather taught me to shoot, I was pouring lead for 9mm and loading them in a Lee Loader for his old Luger P08 at nine years old. He taught me gun safety, and his rule was if I could take it apart, clean it, and put it back together, then I could shoot it all I wanted.
Fast forward a few years, and I wanted to start hunting. My dad taught me to drive on the way to and from the club, and I now suspect that he never loaded a round in his rifle. I asked once "Did you shoot anyone in Vietnam", he just replied "Son, we just did what we had to do and I hope you never have to do it".
Sorry for the rambling, but teach your kids what are toys and what aren't, cap guns and laser pistols are one thing, but when they graduate to BB guns, that's another story.
I remember an epic butt warming for shooting a bird of some sort with my Red Ryder, my dad impressed on me right then that if I shot it, then it needed to be used for food. To this day, if I shoot a coyote or whatever, it makes my butt tingle if I just let it lie. (Which I avoid, but sometimes it has to be done)
Anyhow, teach 'em right, and they'll impress you...