Not something I would recommend!
Maybe you want to buy a chest or desk with lockable drawers. This is furniture, of course, but you can hold a lot more guns, as well as other items. For example, if you keep your guns in the bedroom, you can have one locked drawer where you keep several guns, and another drawer where you keep socks and underwear, and so on. If you keep you guns in the office, you might have a locked drawer for the guns in your desk, next to another drawer that contains office supplies. You might even keep ammunition in an adjacent drawer for easy access.
I keep my guns and ammunition together in an unlocked drawer. Then again, I live alone, so this is not a problem.