I think you are referring to airdrops or bounty campaigns. Well, as long as you won't be putting money into it, as a start, then I guess it would be worthy of your time trying given that you are needing additional income. However if it is passive income you are seeking then better to jist invest on nig crypto names in this industry and wait for bullrun to take over this market in general. Keep in mind the risk of losing money as well 'coz if you're just one of those people who are wanting to earn money on the easiest way, then this industry is not for you as well. There's no such thing as easy money; it is either you'd be working hard for it or have your own capital to start something that will generate additional income.

But it is already a good start that you considered navigating than spoonfeeding. In such way you'd learn more than what suggestions could offer. There"s many possible income generator in this industry and you just have to have your own ways of achieving such drive.