4. Investment in Cryptocurrency
It had its ups and downs, but we cannot just rule it out as an investment option yet. Because many people are still benefiting from investment in cryptocurrency trading or mining. Trading is just a volatile kind just like the foreign exchange trading, but cryptocurrency mining is another debate. So you buy some mining grade hardware equipment and keep the system running 24/7. You are providing accounting services by digitally stamping the currency and get paid for it. It is not much but worth enough to be a passive income stream.