It goes without saying that you have to be original for your main businesses.
However, online you can have multiple identities and
have multiple income streams running for you simultaneously.
Find a popular story, for which a lot of people are talking about. Observe the trends in a market, and find something extraordinary that everyone is talking about, and will probably be talking about for a long time when more and more people hear about it.
Create a product around that story with your own twist. Don't copy something blindly and only change the name. Instead, incorporate the cash cow in your existing marketing funnel, and move on without spending too much time on it.
Start promoting. How are you going to use the above to your advantage? Affiliate programs, Google adsense, Sell Advertising, Building list and selling automatically with autoresponder messages, Advertise your existing products and services, The ideas are up to your imagination.
Repeat. Easy as 1, 2, 3. Before you know it you will be selling Ice to Eskimos.
While your main businesses are running successfully, you can experiment and set up cash cows that run along side or incorporated with those existing businesses.
Cash cows are moneymakers that are very hot in a particular timeframe.
Ask a friend of yours, who is not in the Internet marketing field, but maybe owns a dog website or <insert niche name here> website.