A reality show streamed from inside the actual Starship nosecone for the duration of the trip to Mars.
Get SpaceX to lend you a spare starship nosecone
Outfit it approximately as planned for the first manned trip to Mars
Have a crew of interesting volunteers live in it for 7 months - the time it will take for the actual starship to reach Mars
Live stream it online like a reality show. The daily best parts could also be made into a TV show
Use this as practice for the actual trip. Study the psychological aspects
SpaceX can iterate on the interior design based on this experience
Make the 2nd season during the actual trip to Mars
The entire thing can be done in Boca Chica, in some corner of the SpaceX premises. Elon can probably spare a cone. They aren't going anywhere for the next few months.
What do you think? Would you watch the show? Would you volunteer?:)