There has been a mania for string figures recently, with the kids mastering Jacob's Ladder, Cat's Cradle, the Witch's Broom, and even the dynamic Walk the Dog. You can learn most of them by using YouTube videos.
There is also a book about
String Figures by Harry Smith, the guy who created the amazing, weird, and wonderful
Anthology of American Folk Music and who served as Shaman-In-Residence at the Naropa Institute.