I have often put cinnamon in my coffee grounds for a little added flavor. I've been advised by my doctor to not drink caffeine [see post about. I'm too lazy to wash the coffee pot 2x and brew it again, so I drink Folger's instant decaf. By adding a little cinnamon or better yet, NUTMEG, it tastes exactly the same as regular! I made it extra special by picking up a jar of whole nutmeg balls and I grate (using my zester) a little bit of FRESH nutmeg each morning. The aroma is wonderful and it is delicious.
The next step? Try flavoring your coffee, whichever kind you drink, by putting cinnamon, nutmeg or even liquid vanilla in the grounds. You'll love it!