The workshop would be an introduction to the tool: vvvv.
The final goal for the participants is to actually create a mixture of drawing and projections on sketchbooks.
(see this installation projected on a wall:
https://vimeo.com/42266187 )
The trick is to project pixels on an existing canvas with some sensors that enlight and make the drawing alive.
A very nice example of this technique is that you can build poetic machinery with just a pen and some white pixels.
This technique can also be applied on a wall with graffiti artists.