Exhibit Design Inspiration: Etch-A-Sketch Exhibits

A maker named Angela Yuan created this cool Etch-A-Sketch clock using servo motors and Arduino controllers (which will be the subject of a future ExhibiTricks posting.)

In a more "old school" vein, George Vlosich creates intricate portraits on the device.

What other types of exhibits could we create with the Etch-A-Sketch?