You may be looking into purchasing a safe to keep important belongings out of burglars' hands, to keep weapons away from your children or just to make important paperwork a little more secure. Sure, safes can be hidden in a closet or tucked under a bed, but those can be found eventually if someone takes the time to search. But safes can be hidden in all sorts of clever places—so even if someone knows you own a safe, they still won't be able to find it.
In The Walls
Wall safes aren't just effective in the movies. There are countless types of decorations you can put on your walls to hide the door, and with the right paint job, the door itself will be hard to see. This is a trick most easily done while your house is still in construction, but it can be done at any point. Choose a place in the wall behind furniture, behind an unobtrusive piece of art or in a closet behind your hanging clothes.
You can still take it farther, however. If you have any rooms with tile, you can make some of the tile squares the door to your safe. You can also install a faux vent cover.
Of course, this can only be done if there is adequate room in the wall, so call a locksmith such as Irvine Lock & Key and ask them to help you install it. While they're at it, they can probably recommend the best type of safe you can use for hiding.
Under The Floor
This may not be doable depending on what type of floor you have, but if you're willing to have a little digging done, you can put a safe underneath the floor. This is best done with tile and wood that is easily removable. The important factor here is what's on top of the opening; putting a safe under the floor is smart, but putting the opening somewhere unexpected is better. Putting furniture or a rug on top of it just seals the deal. A locksmith's help would be appropriate here as well. They may be able to recommend a safe that opens from the top so you don't even have to pull the safe out to access it.
In Your Furniture
Furniture can be user to cover things up, but it can also hold your safe itself. Certain types of sofas and love seats are good at this, but daybeds or decorative mattresses work too. This works best if you're modifying furniture that's already hollow so you can attach hinges and make the top or back a door. Alternatively, see if there is any custom-built furniture available for purchase that you can play with.
Inside Book Sets
While you can use a bookshelf to hide a safe, you can use the books themselves as well. This doubles as a fun DIY project if you feel up to it. Take a set of similarly-sized books you can afford to lose, glue them all together at the covers, then cut out the insides. If you measure the width, length and height right, the safe should fit snugly inside, then you can put the books back on a rarely perused shelf.
With a well-hidden safe you don't need to worry about someone stealing the key, though that should still be secured so you don't lose access to your own important belongings. Take some inspiration from these steps and think of a clever place to hide your key as well. When all is said and done, your items will be secretly tucked away and still easily accessible.