I love placing servers and other long tables behind couches to create some detail and interest and more importantly light or height! I saw this last night and I just love the idea! So simple and so necessary for small spaces!
They took a 2 X 6 from any local hardware store, stained it, and hung it by L-brackets to their wall creating a custom sofa table for their space!
Just another way to save space, create a point of interest, and save $$$!