Any suggestion for things that we could invest and make money at the same time
I think you can make an investment while earning money at the same time. But, in fact most of investment takes time to earn money just like investing in cryptocurrency. You just need to be patient in doing investment simply because the more you wait, the more income you can gain.
It is really possible to make money and also do investment at the same time. It is the recommended method by some of the successful and rich people that I know because that is how you are going to build your streams of income and once your passive or semi-passive income is outperforming your pure active income then that is the time where you can start to settle down and prepare to retire and enjoy your life.