So the local hackerspace put on a show in Highland and, being the guy with the 3D printer, I volunteered for a few hours of stand-up comedy.
A pile of stuff provided talking points:
Four pages of solid model images on nice glossy photo paper let me talk about what must happen before the plastic emerges:
I loves me some OpenSCAD modeling, yes, I do…
Signage festooned with sample critters dragged ’em in off the street:
The printer produced a steady stream of tiny owls:
And the ever-popular whistle:
A good time was had by all!
The Smell of Molten Projects in the Morning 
3D printing “that” way, surely? :)
They handed me a pre-printed piece of paper and let me trace over the lines & letters. Then I pasted my cute figures in place! It was just like first grade!
Truth: the signs came from a new vinyl cutter with a pen in place of the knife. This was the first attempt at using it as a plotter and everybody was so excited that nobody worried about proper diction… [grin]