I love flavored coffees, but they are hard to justify in my budget at times. I do not use cream or sugar in my coffee so those creamers and syrups don't work for me either.
I tried putting a teaspoon of vanilla extract in my coffee pot decanter and then brewed a pot and it is good!!! I know that I have seen many different types of extracts, amaretto, chocolate, nut flavors to name a few. I like this idea as I can brew a different flavor every day, and I can pick up a different flavor as I come across them :D :D :D