A particularly successful form of multi-stakeholder cooperative is the Italian social cooperative, of which some 11,000 exist.  1 Type A social cooperatives bring together providers and beneficiaries of a social service as members.
The sport of Quidditch gets its name from Queerditch Marsh, the location of the first recorded game. A witch by the name of Gertie Keddle lived on the edge of the marsh around the year 1050 and recorded what she saw in a diary that survives to this day.
Community Q&A. In the Harry Potter series written by JK Rowling the main wizarding sport is Quidditch. However you don't have to have magical powers to play. There are many different ways of playing Quidditch, but the most commonly used set of rules are those given by the International Quidditch Association (which can be found here).