I liked an article on
12 ways to making money using blogs.
Things like speaking assignments, writing assignments, selling products like ebooks are mentioned as methods of making money.
AdSense and amazon affiliates are the initial money making methods. Then comes direct ad selling. Getting sponsorships is the fourth one.
Winning prizes for blog can another source.
Creating YouTube videos based on blog content can be attempted.
You can write specific sponsored articles, that is commissioned articles.
You may get book writing assignments also.
You can be invited as a motivational speaker apart from being invited as an expert on the subjects you are blogging.
Communicate, Convince, and Convert. Selling through communications. Selling through web communications, selling through catalogues, Selling through annual calendars etc. have to follow this strategy.