1. Airdrops...this is the commonest ways of making some money from cryptocurrency. Although not as lucrative as others.
2. Bounties also can fetch you some $. It has to do with performing some tasks either on social media or blogs.
Airdrops were used to be profitable but recently i havn't seen any worth mentioning here
Now as far as bounties are concerned yes you can still find good ones and make some decent amount of cash. For starters look into these threads Exchangeable bounties and safe bounties to join
Apart from that you should look into bounties in service section which pays on weekly basis in eth or btc these are usually signature campaigns but sometimes you get social media ones too.