Here is one that started at hunting camp, but ended up a holiday favorite along with the eggnog and homemade irish cream. (I can't find that one)
Homemade Kahlua
Take 40 oz water and 3 pounds of brown sugar and boil to make a simple syrup.
Take 30 oz water and 12-14 tablespoons of freeze dried coffee and bing to a boil for 5 minutes. (decaf is okay)
Mix both together and allow to cool to room temperature.
Once cool, add 2 oz of vanilla extract and a fifth of grain alcohol. Stir and bottle.
Tastes every bit as good as the storebought stuff at 1/3 the price.
This recipe was created when they were still using fifths instead of the 750ml bottles so the recipe may be a little weak depending on your taste. If you like it stronger, you can either add more grain or reduce the water a bit.
Happy Holidays!!