I love how a little spice makes a cup of coffee that much sweeter and mellower, but without the "fake" flavor of artifically-flavored coffee blends or creamers. Those always have a strange chemical taste, I think. So I mix up my own "coffee-cup spice." Cinnamon by itself is delicious in coffee. Just sprinkle some on top of the coffee grounds before brewing (about 1/4 to 1/2 tsp for a 10-cup pot of coffee). I put together a spice blend, cinnamon-based, that is great in coffee or as a spice for coffee cake or muffins. To use it in baking, add up the amounts of spice you'd usually use in the recipe and use the same measurement of this spice blend.
I store it in an old jar from any one of the spices used in the blend. If you do this, don't even wash the jar first; whatever's left in the jar will just mix in.
Depending on the size of your jar, you can adjust the quantity of each, as long as you keep in mind that some are measured in TBL and some in tsp.