(It's quite serious, btw. I shouldn't have to say that, but sometimes I'm not sure if I'm serious or not. This time I am.)
My idea is Universal Welfare. "Welfare" in the sense of cash payments to individuals, from government, based on some criteria. "Universal" in the sense of for-all-people-everywhere.
It goes like this: every person on Earth gets the same payment, in cash. The criterion is that they are a living human being, nothing more. Everyone would get this payment: newborn babies would get it. Criminals in jail would get it. Enterprising teenage boys selling lemonade on the pavement would get it. The middle-class would get it. The rich and the super-rich would get it. Everyone on earth would get it, from the day they're born to the day they die.
Good idea? Bad idea? Needs modification?


