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
Cardboardhacker's Penguin-Like Robot Project!
Penguin-themed robot design: rad base, white garbage-can body, torso top; considering alarm-clock head and seeking head...
JT's Jts Robie Sr.
Restoring a Robie SR for EZ-B-ification: raising height ~6 in, adding a turning/tilting neck, new paint, learning...
Cardboardhacker's Rc Car Ez-Fied
Modify RC truck to run dual DC motors with Sabertooth 2x12 and EZ-B V3, using gearboxes and standard servo steering...
