As Randy points out in the video below, by giving the toy an Arduino, you’ve not only breathed a little bit of life into an old product, but you could tinker with this further–for instance ...

The robot’s hardware was constructed in accordance with the Open Robotic Platform (ORP) rules. This included two DC motors, an UNO R4 Minima, a Bluetooth module, and an SD card.

If the Uno is too large there’s always its little brother the Arduino Nano, which packs much of the same functionality of the Uno into a chewing gum-sized package.