So you would like to turn your Android device into a telepresence robot? Ralph has you covered. This self-balancing bot comes with a Husarion CORE2 controller with open firmware. Just bring your tablet or smartphone, and you are ready to go. Ralph lets you make video calls with people around it. It has two wheels, 2 DC motors, one servo, and one orientation sensor.
The robot can be set up quickly. Not super expensive either. You can get it here.