Suggestion for character types for the actors.
Each actor is given two different character types for example, nerd & cheerleader, astronaut & cowboy, hipster & drill sergeant, etc. Each actor chooses one of their two types to start as and then begin a scene. At any point, the host may ring a bell and the actors must change their character type immediately, keeping the same plotline and objective. This continues until the actors find a reasonable solution to their scene.