Meet the Parallax Cyber:bot: a Python programmable robot that can teach kids and adults a thing or two about coding. It connects to a micro:bit and can be used with a laser or ultrasonic sensor among other modules. The Cyber:bot is programmable with the Mu software or online MicroPython editor.
This kit comes with a micro:bit module, cyber:bot board, Parallax Continuous Rotation Servos, chassis, battery holder, and everything you need to get started. More information is available here.