Sally and the Purple Socks by Lisze Bechtold
A duck gets a pair of purple socks in the mail. They are incredibly small but come with a note saying they will get bigger in time. The socks grow and the Duck enjoys wearing them as socks. But a few hours later, they are so big, they can be used as a scarf, then a blanket, then a rug, then a circus tent!
The illustrations are bold and simple and the story of socks growing way out of proportion is just ridiculous enough to amuse any preschooler.