Nishinihon Tachikawakougei exhibited a "magic chest of drawers" at the Spring 2009 Tokyo International Gift Show.
The magic chest of drawers features various intriguing functions and hidden compartments within the chest of drawers and is therefore often referred to a Ninja Furniture as well.
Items placed inside this compartment disappear and if the original procedures that were performed before are not repeated, the door itself can not be opened. The magic chest of drawers features mechanisms like this, but in the interest of crime prevention, I can't reveal the tricks behind the mechanisms. Owners can feel secure knowing that various mechanisms like these are hidden in each chest of drawers.