I spent a year working on open source projects through gitcoin.co. I would wake up in the morning, choose an issue from the list, bash out the solution and tests in a few hours, code review after lunch and by the end of the day I would have ~$500 in ETH or DAI sent from Gitcoin's smart contracts to my Ethereum address.

It's not really feasible anymore due to high gas fees, but there is a real use case for you.