We would leave a corner in the room empty, but not a wall !! Walls are for decorating. Contemporary design suggests collective decoration on walls. Just think of a common quality, it can be a common color, or a common material, or a common shape. Collect all items of that category and bring them onto the wall, let them be not so far from eachother. Sametime, limit the collection to an area shorter than your longest piece of furniture in the room or against that particular wall. 

Let us know if you have tried this kind of decor yourselves...you can have a stamp of your own by bringing various colors of items but common shapes, various shapes but common material, etc...think !!!