Have a host of a conservative media show and a host of a liberal media show and have them argue over different topics while also being on a cooking show on a timer
Create a browser extension that instead of blocking ads, creates millions of fake ad-clicks per day. This would cost ad companies a lot of money for no actual benefit, and will eventually give up. Convince people to occasionally use it and cure the internet.
Allow Death Row inmates 3 options for death: The normal way, participating in an ethics-free scientific study, or fighting other Death Row inmates like gladiators and host a world event around the third one.
Turn your car windshield into a gaming screen (when the car is not in use) and use the standard car mechanisms to play augmented reality racing games.