Interesting question. My assumption would be that civet coffee is not kosher, as the civet is not a kosher animal. היוצא מן הטמא , טמא. Since the coffee attains its special properties from its travels through the animal, the bean would not be considered an independent product, but rather a product of the animal.
Argon oil, if processed by goat droppings, would be kosher, as the goat is a kosher animal. היוצא מן הטהור, טהור