Media room--different color WALL ART :: DIY Wallpaper Panels :: These panels become art w/ a bit of molding framing them. If you can't afford to buy enough of a fabulous designer print to do a whole room, try this!
This is a perfect combo of my two favorite ideas for that space under the stairs leading to the basement. A reading nook AND book storage and shelves . assuming that there is enough space for this there.