Not trying to get off topic, but how can you live in a situation where you must hide from others in the home that you have guns? You can disagree with each other all you want on the subject, but you shouldn't have to hide it as if its something you should be ashamed of. My parents dislike guns, but they still know I have them.
I just think you are flirting with disaster trying to hide them around your house and don't want residents of the home to know about them. No matter how well you disguise a safe, they are going to find out.
If they are home alone and get bored, they are going to snoop around a bit, its human nature (not saying they are bad people). If its in a clock, they are going to try to be helpful and reset the clock and find it, if its a book safe they are going to find it while browsing a bookshelf. Just saying, unless you have a safe in a personal place (bedroom, closet, master bath) they are going to find it.