Our little
holonomic robot was a post-season build project, and will continue to be a programming base for the summer and next fall. We took it to the
Team 1153's Relay for Life cancer research fundraiser at a local grocery store, mostly as an eye-catcher, plus it's much more portable than the FRC robots.
We just had to move it around a little for kids and adults to stop and watch, then if they looked interested we would drive it some more. Questions ranged from "does it do windows?" to "where are the flame-throwers?", but
never "it's boring". People who are in the field want to know more; people who aren't but interested just like watching it drive. (People that are not interested are, to be blunt, are not worth bothering.] You have to bring the questions around to what you can answer.
Portablility is a big issue: this robot can be put on a two-wheel cart, and with the controllers and a box for batteries/wires/etc can all be in the back of my car. Kids like to drive robots, even if it doesn't "do" anything but drive. Whatever you add is extra: A ball shooter, tennis or playground ball sized, would be neat, from hitting a target or for the kids to catch pop flies.