Popular stencils
Tombstone Diagrams
Tombstone Diagrams are used to visualise the functioning of translator systems. Includes symbols for Program, Interpreter, Translator and Machine. This stencil is available under a Creative Commons Attribution-Share Alike 3.0 Unported license. http://creativecommons.org/licenses/by-sa/3.0/
Outfits
Stick-figure Outfits(I guess). This was a bit of a distraction for an hour. Someone could have some fun with it... creating hair-styles, etc.