Simple, solar-powered water desalination
I guess this an awesome tech for places where there is no clean water, as long as those places are close enough to the shore.But again, I doubt that any investor will be interested, as they will probably not get good enough ROE with this.This would probably get the attention of government of some poor countries, or maybe some humanitarian organizations, or even the military.I would probably be confident that a small portable kit could be marketed to survivalists and it would sell extremely well.