(I know, so many nursery posts!My Nana, is always getting rid of old books that she no longer wants or needs for her business, usually because of their condition. I have been known to often scrounge around the give away/throw away box to find all sorts of treasures for art and scrapbooking.
In high school, I found an old edition of "Peter Rabbit" in the box. I've always loved those stories and Beatrix Potter's illustrations. The binding was in awful condition, but the darling illustrations were still as darling as ever. So, way back then, I decided that I'd take the illustrations and save them to put my baby's room someday.
So, I've kept those little illustrations all these years, and finally have the chance to use them! A few cheap mattes and frames later, and I had myself some very sweet, cheap art.
As a side note, if you ever need some cool art for any space, I suggest checking out an old book shop or flea market. They will often have cheap old books with great illustrations that can be easily framed. You can get a whole room's worth of art (or more) in one book! Just think of the possibilities..animals, plants, your favorite children's book..