During the Christmas season of 1975, I worked at Crowley's department store in Detroit, Michigan. I worked in the stationary/gift section of the store. We sold date planners, umbrellas, key chains, books, radios, etc. We also sold "Pet Rocks". We sold a lot of them! They cost $3.95 and we could not keep them in stock!
The rocks were nestled in packing straw inside a small cardboard box, similar to a pet carrier. A "Pet Rock Training Manual", with instructions on how to properly raise and care for one's new pet was included.
Wives bought them for husbands, employees bought them for their bosses, parents bought them for their children, boys bought them for their girlfriends. It was crazy! I did not get it at all!
"Pet Rocks" originated with a man named Gary Dahl. They were a fad for about six months and they made him a millionaire.
I never owned a pet rock ~ I thought they were VERY silly! Silly or not ~ I sure wish I had thought of them first!!