I have to say bounties section here is as godo as any if you really want to earn something meaningful. Most of them already have a pre-sale coming up or already past their presale stage, so you need to look at that. If you are getting free airdrop there is a 99.99% chance that it will be something worthless whereas if you are investing into a new project then the bounty section here is filled with them.

I am not saying that you need to work for them, you could do that if you want to and earn something, but you could also check when their presale is and when their release date is and their whole roadmap and whitepaper and all of that will be there. So, you will find something you can invest and brand new.