Chocolate syrup makes a great mocha. This is much better than
Hot chocolate mix makes for a nice mocha and has sugar already
Altoids make a nice peppermint coffee.
Cinnamon is easy: just put it in the bottom of a filter for drip
coffee. You can do the same for press coffee but you will have some
For nut coffee: grind roasted nut of the variety you want and put it
in with the coffee as it brews. Generally speaking this will not be
as strong as chemical flavorings.
Any extract you can buy can be used as a flavoring although I feel
many extracts will give coffee a chemical flavor so you may get bad
coffee with this method. Try to find extracts that do not use an