Wouldn't it be cool if a "ringmaster" (can't think of a better name, sorry) was running a "lucid game", such as a real-life game of Team Fortress 2, or any other type of game. People would just come to the 'ringmaster' and sign their name/username on a "dream detector" (i.e. There would be a light next to each person's signage, green means lucid, ready to go, yellow means dreaming, but not lucid, red means asleep, but currently not dreaming. Light off means awake.) Once the detector had enough names, a message would be set out to all the people that signed up, telling them that the game was ready to go, and to get to the 'ringmaster'. Then he would start the game.

Sorry about the text wall, hope you all can understand that