thanks for this informative thread , you have shared something that many wanted to compile and here it is.
will add this to my bookmark so i can share to others specially in newbies here to prevent me from digging and explaining more.
like have stated above, you just don't really earn much for free these days, you should stake your capital in order to gain money out of cryptocurrency like investing even staking.
hoping for freebies you could rely on airdrop and many more but is it truly worth your time? since even testnet task for airdrop these days also become worthless.
i think the topic stands for itself that earning free, meaning it does not need to be big or much but at least there are still some.