This is a robot toy driven by a PICAXE 20M2 microcontroller and L293D H-bridge motor controller.
The motors are activated by a simple photophile (or photovore) algorithm that moves toward light. It's pretty neat how 2 simple LDRs can provide some semblance of object avoidance. It's also fun to drive it around using a flashlight.
It stops randomly to play one of about 20 different tunes, then continues on its way.