It was the perfect pet in the later months of 1975. The "Pet Rock" was the most low-maintenance pet that a kid - or adult, for that matter - could want. It stayed put in its cardboard box (replete with breathing holes), it didn't make a peep (no worries about the neighbours complaining about a barking dog in the yard) and best of all: it scored its creator, Gary Dahl a few million bucks before the fad was over. And over it was in a mere few months; by February 1976, discounted Pet Rocks could be found on store shelves, and knock-offs were everywhere. Regardless, the fad was (low-maintenance) fun while it lasted.