Pizza

1. Consumers: Anyone who enjoys a good pie from time to time

1.1. If a Super bowl was going on the demand would increase

1.2. The change of preferences would make the demand increase

2. Producers: Any different local pizza shop or pizza chain

2.1. Supply would increase if new technology came out that made pizzas twice as fast as normal

2.2. It would cost less for production which would make the supply increase