Blogs - are there any subtle ways of income?

I'm starting up a blog in collaboration with a facebook group of some 4k users, and in the beginning I'm going to expect some 100 clicks per day, maybe more? The site is to launch tomorrow, and everything is set to go, however I'm keen to know if there are any ways I can make a few cash on the side by running this. I'm not doing it solely for the money, and as thus I'm not interested in running large banner ads on the website as I feel like it would take the focus away from the brand. So I'm investigating other methods - would the amazon affiliates program work maybe? Or are there any other programs alike out there?