You can earn free altcoin by joining in bounty campaign or airdrop, you can join signature campaign because your account level have reach minimum is member, you can choose which one good bounty campaign for you run, other way you can join social media bounty campaign like twitter, facebook and telegram.
What about services, actually hidden talents have room here on cryptocurrency space. Just look for the economy and services, then post your capabilities there, I have a suggestion, if you know you can edit images, graphics and design such things, then it would be a big help for people who need help in rush. In return, they will pay you an amount you've both talked and agreed about. Just always think that crypto always opens up opportunities for us, let us always be efficient.
Finding the right place to bring out your knowledge can also helps you to earn crypto, there's other types of bounties which you can discussed from the team, Bringing up good ideas to attract more investors if you know some ways to bring more traffic and bring more affiliates developers are always open and willing to pay you up.
Be very resourceful not to relied with existing bounties but try to give unique ways, You can create blogs or video tutorials and show it up to the developers, Once they've approved it will bring you good amount of their coins.