I suggest participating in airdrop because you do not have to do any much efforts to get free tokens worth ranging from $1 up to $200. What you need to do is just fill out the form and send it. After ICO, or IEO of the project, you will receive your airdrop tokens. It will not be disappointment even if you do not receive airdrop tokens. Some projects require KYC information, while others do not.
the potential benefits of most are only promotional languages, in fact most of them can always be far below that price, almost all markets apply even 10x nominal trading limits than they get so coins cannot be traded easily, even in forkdelta. From the valuable side, I don't recommend following Airdrop, except for coins that are already popular.