Any ideas for a "perfect pitch"?

For a project, I have to invent an object or company that is ecologic and ameliorate people's life. It is like the TV show : The dragon's den .. I have absolutely no idea of what I am going to invent , help please??

PacMan. You need something like pacman that eats everything in front of it and leaves nothing behind. Kind of like the man that got $100,000+ money to clean up garbage in the Mississippi River. He created jobs and cleaned up the environment Now, I am not sure that it has to invented in real life or you can just do a Simson thing where nothing is real.

Good Luck