Royalties (music royalties but there are many options)
It is a good form of passive income and it requires investments, good way to diversify your portfolio.
I am not expecting anything from this suggestion and don’t ask me for ref. links or else.
Do you want to know more? Google it, search for links and do you, you can find many websites or information about it, you don’t need my help or my ref and I don’t need you to sign for me.
The only thing that I accept are other honest and genuine suggestions here on in pvt, if not it is ok anyway.