Meet the Waveshare PicoGo: a Raspberry Pi Pico powered robot that can follow lines and avoid obstacles. This robot comes with a 1.14-inch IPS LCD display with 240 x 135 pixels resolution, Bluetooth for app connectivity, a 5-channel infrared sensor, and N20 micro gearmotors.
You can use your smartphone to change the lights and control the robot. Drag & drop programming is supported over USB. This kit comes unassembled but it is pretty easy to put together.