These would make an awesome staircase to an attic. I would love to see some Harry Potter books on there. This would also be cool with movie titles on it as well. I love this staircase--- more folks should do stuff like this.
Cut wood to fit your staircase risers and then paint & stencil to your heart's content. Glue them on afterwards in the order you'd like and voila! -- much easier than stenciling in place on the stairs.(maybe pelmets)