Amazon.com: OSOYOO Robot Car Starter Kit for Arduino | STEM Remote Controlled App Educational Motorized Robotics for Building Programming Learning How to Code | IOT Mechanical DIY Coding for Kids Teens Adults :
Smart Robot Car 2WD Chassis Kit Upgraded V2.0 for Arduino Robot STEM /Graphical Programming - Tag Detacher Co.
Zumo Robot for Arduino [v1.2] : ID 1639 : $109.95 : Adafruit Industries, Unique & fun DIY electronics and kits