I don't know why - but the colors that keep coming to my mind this year for Spring are blue, brown and black/white toile!
I got these books for a dime a piece last summer:
I covered them with toile wallpaper (Habitat ReStore, thanks Mom!); nothing fancy here - just cut a piece and fold around each book tucking inside the front and back covers:
A scrap of light blue paper makes a band around the books and is taped underneath and just tucked inside the cover of the top book:
A scrap of brown ribbon completes the set:
Pair these with similarly colored items for a nice Spring display: