These beautifully designed and colorful posters from a variety of sources can be printed on a home printer with good resolution (the size will be ~5 by 7; good for cards or framing). First up are several that promote reading, the first two from Russia and the third from the US (no language barrier here)!
Next, some vintage travel posters from the Boston Public Library’s Print Collection.
Last are several meditations on the theme of peace from a remarkable flickr collection called "USSR posters."
Further viewing: Don't miss our anthologies of rare posters!