The best way for a steady income, especially when it comes to Bitcoin, is to probably join a signature campaign and always cap out whatever the maximum number of posts a day/week/month is, that way you get a relatively simple and consistent income directly in Bitcoin. Now that doesn't fit your criteria of not doing anything, so that's out of the question.
One potential idea is investing in a casino bankroll and get paid that way. I haven't done it in the past but with enough research I think you'd probably have a good idea of how it would all work.
I absolutely agree to that, if you really want to have steady income always join in siganture campaign in bitcoin forum and it is very effective. I think you could also have steady income if you invest it in trading and as of now trading is one of the best sources of income. If you really want to have that I think you should be smart and be patient.