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!