In your spritzing bottle, mix 2 tablespoons of vodka (about half of one of the tiny bottles) with about 20 drops of essential oil. Shake it up and then fill the rest of the bottle with distilled water. Shake before each use to blend--it will separate a little while it's sitting.
That's it! So easy. I chose Aura Cacia's Mellow Mix--it's got lavender and sandlewood oils, among others. You can do anything with this, though. Go minty and refreshing, if you like. Whatever scent makes you feel like "home".