Age an existing drink
Take one of your favorite drinks like whiskey, bourbon, tequila or any other name brand drink and pour it in the barrel. In less than a month it will give it a whole new set of flavors.
Make your own mixes
Not only does an Oak Barrel impart flavors on your drinks, it makes a great way to mix them.
Make a negroni, some fireball (cinnamon whiskey) or a dozen other drinks.
Make whiskey from scratch
If you have access to high quality drinking grade alcohol you can use your barrel to make whiskey or many other drinks from scratch. If not, there are many kits available to help with this.