[PaW]

It depends on the age of the audience and the venue (and the venue's size limitations). Here's what our team has done at smaller venues.

At Elementary school demos (eg. during a Science Fair), our students will set up a simple 'knock em over' game and let the kids drive a VEXbot.
Pictures here:
http://www.flickr.com/photos/saintsr...57626507422496
http://www.flickr.com/photos/saintsr...57626507422496


One of our mentors has provided his Parallax Scribblers, Boe-Bots, and "walkers" for entertainment.
Pictures here:
http://www.flickr.com/photos/saintsr...57626122938315
http://www.flickr.com/photos/saintsr...57626122938315
http://www.flickr.com/photos/saintsr...57625707617879
http://www.flickr.com/photos/saintsr...57625707617879
http://www.flickr.com/photos/saintsr...57625707617879
http://www.flickr.com/photos/saintsr...57625707617879

Scribbler S2 in action:
http://www.youtube.com/watch?v=Vk_wa...eature=related


NXT is great for kids whether or not they've had any prior FLL exposure. Bring a laptop for programming!
Pictures here:
http://www.flickr.com/photos/saintsr...57626122938315
http://www.flickr.com/photos/saintsr...57625707617879
http://www.flickr.com/photos/saintsr...57625707617879