Over on the New York site, we featured wall art stickers by Butch & Harold back in '07; for '09 we're seeing how great these can be for kids, like the train frames shown above. Butch & Harold offers sticker frames in several styles, as well as pre-made sticker art for displaying on its own.

Stickr train ($24.95)
Kit containing 8 pink or black frames ($19.95)...(we think these would be great for an evolving teen's room with evolving photos of friends.)
Morris ($35)
Butch ($35)
Also available: Stickr corners for displaying kids' art (7 sets, 7 customizable nameplates, in 7 colors for $8.95)