The easiest way to earn token will be airdrop, you don't have too much to do and you will earn rewards for it. Sign up as much as you can do because many of them are not paying.
I agree that airdrop is the easy way to earn money and it's popular among newbies here in the crypto world. Most of the airdrops too are not perfect or created only just to scam investor. I suggest if you want to invest with this airdrop because some airdrops required investing. You must be careful but if you just want to join their airdrop just to get free tokens then join but join as many as you can because as you said not all our paying.