I'm having a hard time figuring out the best thing to place in the space between my sofa and my wall (where the cardboard boxes are currently). I originally had the sofa up against the wall, but thought it looked better once I pulled it out 12 inches. Now there's just some dead space there. I tried putting a sofa table behind it, but unless I go the custom route, the tables are just too short lengthwise and look weird. I plan on hanging some art, but not sure if the space will look strange. I was thinking perhaps leaning a floor mirror on the left side (kind of overlapping with the end table), but also not sure how it will look. Ideas? Thoughts?

FYI- I also attached a pic of all my furniture (some of what's in the picture is temporary, like the lamp)