I think the best way to get steady income in form of btc without actively doing anything is by mining bitcoin. but you need big capital to do that. also you can join signature campaign so you only need to follow the rule so you eligible to receive the payment.
Signature campaign is no doubt the good to earn a some amount of income from bitcoin. Signature campaign is a good way of earning for those who dont have enough capital to afford buying or investing in bitcoin. I will suggest to look for some suitable job as well. This will help you earn a very good amount of earning at the end.