Floating Ikea shelves behind the couch

Ikea gave me this idea.  Ikea has a type of floating shelf which has no visible brackets to hold it up.  The shelf is installed by attaching a hidden bracket onto the wall.  The bracket has two poles that are about 5 inches long.  The poles extend straight out from the wall.  The shelf itself has 2 slots that the poles slide into and hold the shelf up.  Two small screws hold the shelf onto the poles so it does not slide off.  

One living roomthat Ikea had set up for display used two floating shelves behind a couch.  What a great idea!  I installed two white shelves directly behind my couch.  It is great to have the extra room to place things on.  I put two lamps there for extra light when reading or whenever needed.