Am guessing that's too easy of an answer. and what's it got to do with Christmas as it's a themed quiz.A thermometer?
Just looked at this post.I was known to Greek wise men many years ago. My quicksilver blood can let you know if rain will turn to snow.
What am I?
The answer isnt mercury so no prize for you my friend, read the question twice before answering!I think the answer is Mercury, and I hope I get the £225 hamper at your expense