You could also use latex paint to design your own wall patterns. If you do the job well, no one will ever make the difference between your work and real wallpaper. But you'll have the satisfaction of something unique, something no one else in the world has, not even those who employ skilled interior designers to do the job. If you want a regular pattern, you'll need a stencil. For your pattern to be really unique you should design your own stencil. It's fun and easy. Browse the web to find stencil tutorials for interior decorations that will guide you through the whole process step by step. Yes, this technique requires a lot of your time, but the results are worth the price.