My little brother has that middle school project where you have to come up with a new invention. Instead of thinking up something simple like the rest of the class he and his friend wanted to make "a robot that shocks people" or "a robot that could flip you off". I told him that that's going to be difficult (and he can't get away with it) so he decided just to make one that is autonomous and ideally able to avoid hazards.
I ended up getting a chassis that comes with an engine and a motor controller addon for my arduino (thought I'm not sure what else and how many other wires we would buy). However, we can dissect some cheap remote control cars and by a servo if we wanted to go the ghetto route.
Oh. Also, the company sent me an email saying "Oops, we didn't listen to your message before shipping your order. Just refuse it and we'll refund when we get it back."
Problem is this: I made two orders and UPS normally just drops them off and drives off.