I wasn't a big fan of the Dreamgirls movie the first time I saw it, but one of the things that I did love was the interior decor, specifically the blown up image of Deena Jones on one of the walls of her husband's office. I love how it is both simple and luxurious, equal parts humble and self-centered. Now, I am not suggesting that you blow up a picture of yourself and use it in your room--that would be a little self aggrandizing-- but you might have a great picture that would look great spread across the width of a wall.
Now, I am not going to lie, creating your own wallpaper out of an image isn't going to be extremely affordable when compared to painting a wall. Companies like Design Your Wall charge upwards of $6.50 per square foot, meaning that a 10'x10' image will cost $650.00 plus. So, for someone that is looking for something completely unique and personal, this is a great option.