Merchandising

If you're a well-loved blogger, there's a good chance that your readers would like to show their support. Give them what they want and make money by taking advantage of merchandising opportunities.
1 - CafePress.com: This perennial favorite makes it easy for you to put your blog's logo on shirts, bags, coasters and other items.
2 - Self-Published Books: If your readers like your content, they may want to have something they can own offline or even share with friends. Create a book with self-publishing services like Lulu, and you'll earn profits even without a huge book deal.
3 - Printfection.com: Design and sell custom products with Printfection.com.
4 - Hard-Copy Content: Create a CD-ROM "book" with cleanly organized content that can be accessed offline. You can take things a step further and sell subscriptions for future updates to the system.
5 - GoodStorm: Like CafePress.com and Printfection.com, GoodStorm is a nice way to create and sell your own merchandising products.

Selling with Amazon

Amazon.com is one of the largest drop shippers on the net. Surprised to hear me say that! Don't be. Amazon will pay you a commission for each sale you referral to their website. These commission fees can add up to a lucrative additional revenue stream when used effectively. They stock tens of thousands of items and they have the largest book store on the net. Simply add a few display ads to your blog post and leave the rest to Amazon.

Selling Your Content (Ebooks, Videos, DVDs)

If you’ve got great content, another option is to package it and sell it. There are numerous bloggers who have created ebooks and even real books based on their blog content and made great income selling them. You can also expand to infoproducts like videos, DVDs, audio CDs, and printed books on demand.

This can take some significant work and it requires great content to actually sell, but it can be a nice income stream that lasts a long time.