I will start with this one. "Pet Rock" http://en.wikipedia.org/wiki/Pet_Rock Dahl's biggest expense was the die-cutting and manufacture of the boxes. The rocks only cost a penny a piece, and the straw was nearly free. For the initial run of booklets, Dahl had a printing job for a client and "tacked" the pet rock booklet onto the main job. This resulted in a batch requiring only a cut and trim, at almost no cost except some labor He sold a shit load for 3.95 making him a Millionaire. Guy deserves the Nobel Prize of Business ideas. Only in America can you pick up rocks from the street and sell them to folks for almost 4 bucks.