I must be missing something here... whats wrong with a drawer by the bed? Under the mattress? In a holster hanging behind the headboard? Under a pillow? The top shelf of a closet under a blanket? There's plenty of ways to keep a gun and kids cohabitated safely without expensive ugly bedside safes.
My kids learn about guns before they learn their letters. Even if they found one of mine hidden somewhere they wouldn't touch it. They have plenty of opportunities to handle them when I'm around. No curiosity, no motivation, any time they want to mess with one they ask and I always say "yes" or "in just a minute" and make time for them.
The mother in law freaked once because I left one on the kitchen table while I was cleaning it (went down the hall to grab a tool). She went to move it and the kids told her "if you touch that and daddy's not here you will die." and "Nobody touches Daddy's guns without him." She picked it up anyway and they ran down the hall screaming for me at the top of their lungs, they were furious with her for hours. I egged it on since it was the mother in law
. I trust them but they haven't found anything I wanted to keep hidden so its a non issue.