While Amazon’s affiliate marketing program might be one of the biggest out there, it’s definitely not the only one available.
Depending the topic of your blog and the amount of traffic you get, you can participate in any number of other marketing programs. Some marketing programs only want blogs that have a high traffic volume, so you might have to wait and build your audience before signing up.
As your blog grows, fun ways to make money online can include reaching out to small companies whose products you trust and use to see if they would like to set up an affiliate marketing program with you.
You would post a link to their product on your blog and if someone clicks through your blog to their site and orders it, you would get a portion of the sale.