Steemit
Steemit is itself a great investment buying steem power is a good investment, more steem power more rewards. Writing good content and having high steem power will boost reputation and earnings.
Bitconnect.co
I have seen bitconnect is looking good for high returns. We can earn monthly 30% profit. Their records and systems are transparent. I have invested 100$ and got 40$ profit.
Investing in cryptocurrencies
Investing in selected coins after research is a great idea. I am thinking bitcoin and etherium will give good returns in long run.
Investing in ICO
Nowadays initial coin offerings giving good returns but we have to select reliable and great potential ICO for good returns.
Investing in PTC sites
There are some PTC sites giving opportunity to rent referrals for that we have to pay some amount. If rented referrals click more ads we earn more money, it is also like one type of investment but risk is more because sites may turns to scam.