Looks like there are plenty of solid ideas here for you to start with in addition to the methods that you have already read about. But, a little more information is needed about you.
As was mentioned earlier, it comes down to what you're good at. That will ultimately determine what is truly 'easy' for you.
Now for that information that I was asking about:
First, are you looking to spend only a certain amount of time weekly on this CB project? (How much time can you devote to IM?)
Secondly, are you wanting to start this for very cheap or even free? (Do you have unlimited funding for PPC campaigns, etc. or are you broke?)
Lastly, what experience do you already have in IM so far that you may be able to capitalize on? (Have you run successful niche review sites, Adsense MNS, or article marketing, SEO, etc.?)
This would be important information for us fellow BH members to have in order to make a more informed decision as to what would work best for you to start out with in CB marketing.
Also, could you better define the term 'easy'? By 'easy', do you mean solid, steady earnings over a long period of time while working on autopilot? or Instant results in the short term with minimal effort involved in getting started?
Nothing is easy, my friend, it just takes work.
Answer those 3 questions I asked earlier and you'll receive more focused help as opposed to everyone just throwing their good methods out for you to decide on. That will just reinforce what you may have already read and not really answer your specific question in the OP.
Just my thoughts...looking to hear back...