You are going to be amazed by this
drawing robot who can sketch your portrait just by looking at you.
This
Aikon2 Skediomata robotic arm was presented at the
Kinetica Art Fair in London a few days ago.
It uses a video camera to view facial features and then the "hand" reproduces them on a piece of paper using a pencil.
The software was developed by a research team at Goldsmiths University of London and it would not be expensive to produce.
More info on the Aikon-Gold project website.
http://www.youtube.com/watch?v=AOtQAhblRps