GoPiGo is a popular toolkit to turn your Raspberry Pi board into a moving robot. After you purchase and receive the GoPiGo Robot Base Kit as we mentioned earlier, follow the detailed steps at https://www.dexterindustries.com/GoPiGo/get-started-with-the-gopigo3-raspberry-pi-robot/1-assemble-gopigo3 to assemble it together with your Pi board. This should take you about one or two hours, depending on whether you're also watching March Madness or the NBA playoff games at the same time.
After you're done, your Raspberry Pi robot, along with all the accessories we listed earlier, should look as follows: