The first thing that comes to mind is some sort of fabric art, like rustic, hand-woven pieces. You could also put in shelves next to the firebox (maybe glass) for chachkis.

Think big pieces. We had really tall ceilings growing up and my mom was always able to find big things really cheap at auctions and estate sales - most people had little houses so not much market. YMMV.

My First suggestion would be NO mirrors below the mantle..that will not be a good addition for this space...such a beautiful space you have with the vaulted ceilings. If possible I would continue the brick on both sides so the fireplace continues all the way it will give it some heft and balance out the room with the vaulted ceiling and beams...if this brick can not be matched I would add brick and paint out all the brick to match....add a big colorful piece of wall..since you have acess to electrical on that wall I would bring it up to both sides above mantle and install wall sconces.

Home Interiors with Ease, I never thought of wall sconces. I like this idea, as it would brighten up the space. Thanks!

Beth H, don't worry! Yes, we are planning BIG changes for the furniture, flooring, wall coloring, and TV in this room. It's a very large room with odd shaped walls.

dough nice! I do like the vaulted ceiling w/the wood though. can't wait to see what you get!