RE: What are the ways to Earn in Crypto Space other than Investing in it ?

Well, there are ways but I have not tried any of them and dont want to mislead any new users. Still they are not ponzi schemes.

1. Andriod game, pays out in Bitcoin
   a.Bicoinpopper
   b.blockchaingame
2. Take surveys, complete micro tasks
   bitcoinget.com
3. Watching advertisements
   Link to the site

Let me know, if you came across any other ways, I will surely take a note of it. But since they are free, they might come with a risk also - Just a note of caution.