Whimmy-Diddle.
Whimmy-Diddle.

A whimmy-diddle, also known as the Gee-Haw Whimmy-Diddle ("gee" and "haw" are the commands shouted to oxen on a farm), is a toy made out of a stick of mountain laurel that was traditionally made by mountain parents for their children. Notches are cut down the stick and a propeller is put at the end. When another stick is rubbed against the notches exactly right, the propeller spins. With a lot of practice, the user is able to make the propeller go right or left as desired.

References:

Florence H. Pettit, How to Make Whirligigs and Whimmy Diddles and Other American Folkcraft Objects (1972).

Roy Underhill, The Woodwright's Companion: Exploring Traditional Woodcraft (1983).

Image Credit:

Whimmy-Diddle. Image courtesy of the Southern Highland Craft Guild. Available from http://southernhighlandguild.org/pages/posts/heritage-weekend-7.php (accessed June 12, 2012).