Literary artwork at the best possible price

I'm totally in love with Mr. Printables.com, a website devoted to free printable art for kids. (I'm not part of the target audience, but nobody loves a good coloring sheet more than I do.) Anyway, the site includes make-your-own-alphabet-activity books, nursery rhyme posters, and quote-based artwork, all of which A) look awesome, and B) cost nothing.