Wikipedia:Computer History Museum exhibit

Help edit this exhibit!
The Computer History Museum is crafting an exhibit about Wikipedia to debut in late 2013.

What should an exhibit about Wikipedia have? How should it display Wikipedia's activities, live, for visitors? Who better than ask than Wikipedians. We're looking for ideas and how to display and visualize Wikipedia to the public.

Ideas

 * Visualization
 * What are the best Wikipedia visualizations that could be displayed to the public?
 * Teaching editing
 * Wikipedians could volunteer to have an edit-a-thon for newbie editors, each week (or even day) under a different topic or theme