Projector on the cheap

I'm trying to project an image on-site without any power. I need to throw a really wide image too... something commonly out of the hands of your run-of-the-mill slide or digital projector. Someone said 'Why not make one out of your lens?'... so last night I gave it a go and what do you know? A little lego, a slide, my 430EX speedlight some patience and ... well.. it works!

I'll post the result when my experiment succeeds...  for now it's under wraps.

Projector:

Projection:

Original image that the slide was made from: