Lights integrated into stairs. Late at night, the stairs can be lit (and safe) without ruining your night vision with bright overhead lights. Would also be a great way to really highlight a gorgeous staircase.
Newsflash: wallpaper is for more than just walls. Lonny contributor Allegra Muzillo tried it on her stair risers and found every square inch to be a new creative outlet. Want to put a little pep into (Diy Step On Hill)