My suggestion is to always go back to the basics, invest in your knowledge, as much as you can, since there are a lot of cryptocurrency out there being born, there might be new ways to earn, before it was only in mining, it is for the POW coins, then entered trading, in which most of us are already familiar, then comes POS coins, and hybrid coins which is a combination of both,, a lot of innovations is starting to be more and more difficult to produce m, but ewsy to get profit from, then comes the masternodes, in which you can get also stakes or rewards, it is a good way to have passive income, in the future, we may not know what kind of technology or innovation will be developed, might as well take advantage of them at very beginning.