An awesome idea would be a fighting robot. Sure, they probably have one, but not one that destroys the other. So they can listen to you if you say "punch" or "kick" and they will do that. Maybe parts could fall off so that they know who wins. Kids would go crazy for that.
Other robots from Synthiam community
Steve's Introducing Vic The Vac
Victor Vac: Roomba-based EZ-Robot with EZ-B v4, sensors and Synthiam ARC scripting for autonomous vacuuming, voice,...
Fredebec's Another Wall-E. But French ;)
EZ-Robot Wall-E build: LIPO-powered mobile bot with EZ-B camera, MP3-triggered speaker, continuous servos, LEDs, cooling...
Steve's Marcus The Expressive Android
Marcus the Android rebuilt from a Wow Wee Elvis: 12 DOF, lifelike upper lip movement, rotating/rocking pedestal,...
