A custom feature I have recently stumbled onto are stikwood ceilings! Stikwood is actually a peel and stick design solution, but each panel looks so weathered and natural that guests would never know the difference! The products can be found at http://www.stikwood.com/ where you can also browse the different finishes and order samples.
You can place the adhesive panels anywhere from ceilings, walls, and fireplace to instantly add a custom, rustic touch to your space.