One recipe for flavored syrup for coffee is coconut syrup. Combine 3/4 cup of sugar, 3/4 cup of water and 1/4 cup of cream of coconut in a saucepan. Heat the mixture over medium-high heat, and stir occasionally until the sugar dissolves. Remove it from the heat, and stir in 2 teaspoons of coconut extract. Let it cool, and store it in the refrigerator.
Other recipes are for vanilla, raspberry, caramel and gingerbread spice syrups. For the vanilla syrup, combine 1 cup of sugar and 1 cup of water in a saucepan. Scrape the seeds from a vanilla bean into the pan, and toss in the pod. Heat the mixture over medium-high heat, and stir occasionally until the sugar dissolves. Turn down the heat to low, and let the mixture simmer for 10 to 15 minutes. Remove the pan from the heat, discard the vanilla bean and stir in 1 teaspoon of vanilla extract.
To make the gingerbread spice coffee syrup, combine 1 cup of water, 1 cup of sugar and 1 tablespoon of honey in a saucepan over medium-high heat. Stir in 1 sliced piece of ginger root and 1 cinnamon stick broken into large chunks. Add 1/2 teaspoon each of whole allspice berries, peppercorns and ground nutmeg. Bring the mixture to a boil. Reduce the heat, cover the pan and let it simmer for 25 to 30 minutes. Let it cool for 20 minutes, and strain it through a mesh sieve or double-layer cheesecloth.