i almost never keep the dust jackets from books. they're too much trouble to keep track of and as long as the book cover includes the same (or other also good) graphics, i just don't see the point. most of the time i recycle them, but every so often there's one so lovely that i can't part with it.
one of our most frequently read kiddo books is all kinds of families! the story itself has a touching message and the artwork by french illustrator marc boutavant, one of my favourites, keeps this at the top of our story rotation.
i kept the dust jacket from this book for a while before finding out the perfect use - decoupaged blocks!