Staircase Wall Display: The colour of the frames and black and white photos give the composition unity. There are also other little items there that are not even photographs but are in keeping with the colour scheme that add to the visual interest.
Home Organization: Stairs doubling as drawers. Modify your stairs so that each step can also hold a drawer for extra storage of all your stuff. The things you put inside would have to be of the occasional-to-rare use since these look like a pain to have to deal with on a regular basis.