A nice little gem today via Paul Kedrosky:
In the 1890s Wrigley’s Scouring Soap started bundling baking powder with its products. Eventually the baking powder proved more popular than the soap, so the company decided to focus on that instead. Soon afterward they started bundling two sticks of chewing gum with every can of baking powder, and eventually the gum became more popular than the powder. Naturally Wrigley’s decided to start focusing on selling chewing gum, which worked out pretty well.