Nowadays many ICOs offer free coins, but we have two problems with this free coins, the first one the value of this coins will drop after start trading due to a lot have free coins willing to sell it, and the second they ask for your ID (KYC), and i think it is very risky to send your IDs to any one.Please vote to help others
If you want to get coins with less efforts, then airdrop should be the best option for you.
Just participate in some airdrop campaigns that doesn't ask your identity.
Providing your personal data for only small reward is not a worth thing to do.