Britain's Innocent Drinks famously made the decision to launch its business after a weekend's market research project. The company's founders bought £500 worth of fruit, mixed their favorite smoothie recipes, and sold them at a jazz festival in London. The research consisted of a sign and two bins.

The sign asked should we quit our jobs and dedicate our time to building a fruit smoothie empire? Respondents answered by disposing their empty cups in bins labeled yes or no. The yes bin was filled at the end of the weekend, and the rest is history. Within five years the company was selling annually over £15M worth of smoothies.