When my family moved into our current house, the kitchen was papered in the most grotesque yellow/orange/red wallpaper from the 50′s. Looking back, it was actually kind of cool, but my Mum hated it. One day, she let my sister and me rip it off the wall to our hearts’ content. (Wonderful way to keep a 7- and 4-year-old entertained, I imagine.) These papers, though, I would definitely not be ripping off my kitchen wall.
A colourful, sophisticated print works surprisingly well in a small kitchen, from The Kitchen Designer:

Via Apartment Therapy, this wallpaper was hand-painted , based on a vintage sample from a book:


I love this loft kitchen from Canadian House and Home. Unusually, the wallpaper is on the ceiling:

A modern-country look from House to Home (I love the colours here):

This red-and-cream look, from Design*Sponge, might just be my favourite:
