You may invest into Forex or open a forex trading site. You may earn a handsome money through forex trading.
etoro is a good place to put funds, sign up pick your traders the rest is automated i see around a 2%-3% return per day on my investment the more you have the more you make.
It really depends on your what your passion are. Or what your financial goals are. You can partner up with a service-based company that needs help in financing/ marketing. I have some ideas if you are interested. Thanks!