Everyone makes it so complicated. Armchair opinion, for all that it's worth (so probably stop reading here): what can you do to provide a lot of marginal value

Everyone makes it so complicated. Armchair opinion, for all that it's worth (so probably stop reading here): what can you do to provide a lot of marginal value to people, without requiring them to do much? All kinds of things - how about something with clean water or reliable power generation/storage? There is no shortage of ideas out there, richie rich. If you're REALLY hurting for something like an idea, it's going to show, and you're gonna get grifted. What are you expecting to accomplish here, opening a can of meat in a swarm of piranhas?