After warming up the body with several movement exercises, one can start by (for example) taking the others into a scenario such as organising and having a dinner party. You could begin in the supermarket, deciding together who to invite and what to cook. Back home, you are getting everything ready for the guests to come and (oh!) there are the first ones arriving already. Let the scene develop and stay in your character. Then it's up to the next person to define a new scene.
Talking is allowed as long as everyone is moving inside the space and enacting the situation, as if it was real. Experiment with scenes that everyone can relate to, or think of a scene involving new and unfamiliar activity.