Meet the Yahboom Omibox Robot: a Scratch 3.0 programmable robot with Arduino that gets your kids familiar with the basics of coding. It has 3 PCB boards, acrylic plates, and 2 wheels. This kit comes with an Arduino IDE course to show users how to do all kinds of cool things with the robot such as following a line or recognizing colors.
This cute robot is available for under $68 at this time. More info is available here.