Combine the water and alcohol in a small bottle. Add in about 20 drops of essential oil of your choice. (I like to use 10 drops lemon and 10 drops orange).If you are using bamboo skewers (rather than store bought diffuser reeds), you will need to cut the skewers to a size about twice as long as your bottle, cutting off the pointy end of the skewer in the process. Put several of the trimmed skewers into your diffuser bottle with the liquid.