If something feels "off" in your room, your accent furniture (or lack of it) may be to blame. To adorn an under-decorated living room or den, try adding a simple end table like this one from Altra Furniture. Set alongside a plush couch or chair, the table adds warmth and functionality to any space. Plus, because its base doubles as a second shelf, you'll transform wasted floor space into working storage. Available at Target; $39.89.