If you look around your house you can see such ideas as fake air vents, or fake radio, or false bottoms on trash cans, or.. well you see the idea.
If you have a very large DVD collection just go to a pawn shop and buy a 1 or 2 dollar DVD, throw away the DVD, and use the box to hide money or such. Then stuff it in with the rest of the DVDs.
And you see those plug in emergency lights you can put in a socket and if the electricity goes off they turn on? Well get the shell, a LED light and small battery, and a plastic wall socket cover. Then use it to hide a small gun. The LED light will be 'on' while the empty box is plugged in (with the wall socket covers instead of real brass plugs so no shock.)
Oh there are lots of ways!!
"The government has confiscated all of our rights and is selling them back to us in the form of permits."