Googly as in the eyeballs move around? or googly as in bulgey? Or googly as in they'll find information for you quickly allowing you to choose from many websites? (sorry)
For bulgey eyes, ping pong balls, paper maiche spheres, or any other round-ish thing would do (Pom poms are fun)
For moveable pupils, do the ping pong ball thing and take a piece of black plastic (in a circle) Pierce it with a small nail (painted black) and shove it into your ping pong ball. Don't center your hole & it can flop around like Cookie Monster's eyes.
For the latter, Umm..I think it takes coding. Not sure what else...Maybe a hard drive.