I am quite partial to a vodka and love the freshness of adding oils to it. I would usually have a vodka soda with Grapefruit or Lemon & Lime (also go well with Gin) Have a play around and find what you like. These oils also go great in cocktails so as long as they are oils you can consume (don’t go drinking up the ice blue) but even the herbs go well in cocktails, I’ve had a delicious cocktail which had basil and cucumber which I’ve been meaning to re-create.
If you come up with any great flavor combinations please feel free to share, I am always happy to make up and test them out!