After talking with a friend who got lucky in one of the airdrops a long time ago and doing some research I decided to give it a shot. 
I know I am not the only one wondering if it's possible to earn anything from them, so I will be documenting my journey.
The idea is this, from time to time I will register on new airdrops and post them here, after they end I will share the results.

To keep everything organized I created a new wallet and a spreadsheet.
Wallet: 0x240D01462a0d44f910A72469542774c804e04d3D
Round 2 spreadsheet: https://docs.google.com/spreadsheets/d/1C6zjihubeEfOYfRKVKzbKEw9PC2FMWrDxz1gSFGugzQ/edit?usp=sharing

And here is the round 2 airdrops I registered for: 

1. ProBit - the possible reward of ~ 700,000 TEVI

2. WhiteBIT - the possible reward is a share of $10,000 in WBT

3. Chains - the possible reward is a share of 200,000 vCHA 

4. Overline - the possible reward ōLand NFT

5. 0Chain - the possible reward 10 ZCN

That's it for round 2, don't forget to follow if you wish to see the results of this and upcoming rounds. 
Round 1: https://www.publish0x.com/bitmonst3r/trying-to-earn-from-airdrops-round-1-xmymrke

If you have any recommendations or tips, feel free to comment.