The tiny $40 Robo-Q looks like a lot of fun. Check out the video.
The all-around control, you may never experience it! The 6 directions control plus 3 speed levels. Also the Robot can be controlled via Artificial Intelligence (AI) after you press the AUTO button, then the Robot can detect-and-escape from the barriers. What's more, after you press the AUTO button and Direction button, the Robot can detect-and-trace the objects. In the Trace mode, the Robot can be charged and run to the controller automatically! The controller as a Robot Station can be stored a Robot inside.