From illusory to geometric, there is enough wallpaper to please the world.  I'm drawn to monochromatic wallpaper lately for its ease to embrace whatever else is in the room.  These ones are among my favorites.  Enjoy!
Cow Parsley wallpaper, Circus wallpaper, Balaustra wallpaper, Boa, Piccadilly, Malachite, Nuvolette and Tile Wallpaper