The milk man. I was really little then but in the early I remember that the milk man delivered milk to your door. He put it in the metal box that we kept on the door step that kept it cool.--my dad was a milkman.
The Rubik's Cube was released. Erno Rubik wanted to teach his kids about objects so he came up with the idea of the cube. There we over 43 quintillion ways to solve the cube, and since the over 100 million have been sold.