An old management lesson I remember doing in the distant past most likely there are a million other versions of this out on the net. I made this one to cover as many nations as I could and to discuss the topic of discrimination and different jobs. Each person has an odd quirk which you can use to discuss how they can work together or why they can't. Encourage the students to explain their choices.
Once the students finish choosing their island castaways I like throwing problems at them for them to solve like: 'the engineer's wife has a baby where will the extra food come from?'. 'If any fights start how can they work together?'
You can also have the students make a plan to escape the island.
I added myself as number 12 as a joke, feel free to change it.
Every time I bring this activity out it has been a hit I hope it will be for your classes as well! Best of luck!