Apollo XI mission carried a plaque to the Moon featuring a map of the Earth. So doesdo the Pioneers with a plaque with symbolic indications that may help to find its origin.
So, here comes the question: Did the Huygens mission includeprobe carry any hint that may be helpful to find the Earth? If not, why?
This question may extend to any spacecraft that is expected to survive a landing in other places than Earth, like Mars rovers, or spacecraft whose final location is not a known one, e.g. New Horizons.