Rifle Paper Co. products are everywhere. Find party supplies at Target, bedding at Pottery Barn Kids, wallpaper at Anthropologie, and its eponymous stationery collections, well, all over.

plus lots of pastel chinoiserie and elegant Art Deco designs that would be right at home in a 1920s boudoir. High-end brands Rifle Paper Co. and House of Hackney also sell their wallpaper through ...