I am finally going to get our master closet in order with an actual closet organization system. We are doing Ikea PAX, so most of the walls will actually be covered with cabinetry. But there will be about 2 feet from the top of the cabinets to the ceiling with walls exposed, as well as around the doorway. I was originally just going to paint the walls, but now I've decided to wallpaper instead to do something fun in an otherwise boring room. Our closet has no windows so no natural light other than what light comes in from the bathroom window.

Can anyone recommend a good wallpaper source? I don't need anything expensive as this is just a closet after all. TIA!