Your staircase might be the last place in your home you'd think to decorate. But after seeing these staircases, you'll realize that a boring staircase is an opportunity squandered.
Wallpaper
Paste wallpaper to the riser of each stair-- switching up patterns makes it extra eye-catching, as in this pic.
Painted Stripes
Wonky painted stripes add color and character. Found on this post.
Chevron
Use stencils to paint a chevron pattern. Read about it and find a tutorial here.
Source: simpledwellings.blogspot.com
Books
If you're a seriously skilled painter, depict your favorite books on each step. As seen here.
Source: theredthreadblog.blogspot.com