Pyramid conversation discussion. Contains instructions. Students work alone to pick 3 items they'd take to a desert island (from a list of mostly useless objects). Then they must compromise with a partner and choose 3 together. Then once again in a group of 4. Works well with opinion vocabulary (I think we should; perhaps we ought to... etc.) and conditionals (if we were to take the sheep, we could..) and many other possible ways. It will need some modification for younger learners, as one of the pictures is vodka.