I think a nice console or table of some type, styled w/a lamp or two, baskets or stools underneath, and a nice mirror or art hung above, would be perfect.
something about 12" should be fine w/o impeding the flow.
I did a lot of photoshops because I kept finding ideas that would work! In all the photos w/mirrors, you could always substitute a similar size canvas or framed art piece.
see if you like any of these
this vintage looking cabinet painted in a nice color would work. as long as it's not too large
a gallery wall w/all matched sized frames, subjects, and colors (like this is all blk/white)
A bench? If you did that gallery wall, a thin wood bench beneath it would look great
what about something like this?
this console is very shallow. maybe it's too glam for you, but you could do a similar sized piece that works w/your decor
Q