When I was growing up in the 80s and 90s my Grandfather who served in WW2 kept guns in several closets and under two beds at least, and I also knew where the ammo was located. I knew to never mess with them but times sure have changed.
Nowadays I lock mine up responsibly and never loaded. I’ve not started giving my kids lessons though, since they’re not even 10 yet. We’ve talked about safety though. I think that education is super important.
I’ve thought about one of those hidey wall shelves but am a bit scared to have anything quick access that they could stumble upon.