I checked out a couple of books on dolls from the local library recently, and found this interesting tidbit about a doll named "Nina".  During the Civil War, the Southerners used dolls like Nina, with hollow, papier mache heads, to smuggle medicine, and other goods, into the South.  That's pretty clever; as the author pointed out, who'd ever suspect an innocent little girl lugging around her favorite doll?  I have to wonder if people are still using papier mache figurines today in a similar manner, most likely for trafficking illegal drugs...

Here's a photo of "Nina", who belonged to the niece of a major general from Tennessee (the doll itself is believed to be German in origin):