I think in this 2022 bounty hunting is best idea for earning money without investment. Because as we know that now almost IDO are being failed. And ICO, private sales are now very risky they also are being totally failed. You can go with staking, NFT or bounty.
I will prefer you bounty, you can check bounty page there are now a lot of great bounties these are of large pools and many of them are escrowed by bounty manger, so there is less risk of scam.
Making money is not as easy as you think in the bounty campaign because only those who have patience than can get some money, and you know right now mostly bounty is scam and pretty lower allocation, So i don’t think it’s a best idea to making free money for everyone. I don’t see enough projects where escrowed payment. There are no guarantee to get rewards even if payment is escrowed (worthless tokens).