A little while ago I did a post about some covet-worthy kitty wallpaper that I fantasized about hanging in my dream cat office. While that dream is still alive and well, I also recently stumbled across another solution (via @KittyLitMag), purrfect for if you're interested in saving some money, customizing your color scheme, and going the DIY route.
The Cats, Cats and More Cats! Allover Stencil from Cutting Edge Stencils measures in at 24" x 31.5" and promises easy application with acrylic or latex paint, stencil creams, fabric paint or glaze. The site also offers allover stenciling tips and video tutorials to help get you on your way to allover feline bliss. At under 40 bucks, the price is right - and unlike expensive wallpaper - if you hate it (doubtful) or mess up (possible), you can always paint right over it and start again.