system
Given the following post, respond as if you're commenting on Reddit:
human
What things are/could be older than the Earth, here on Earth?

Im buying myself a gift for christmas, and I want something that would have sentimental value along with scientific value.

My initial thoughts were that i wanted something older than the earth. And my first thought went to space. A meteorite maybe.

My question is for you guys, is there anything else i could acquire that was potentially or definitely older than the Earth?
gpt
Much of the Earth is older than the Earth. The hydrogen in water for instance mostly was produced in the big bang. The same would not be true for much of the Helium on Earth which would have been produced via radioactive decay on an already formed Earth.

While not as old as the hydrogen, most of the common elements would have been produced in the hearts and deaths of prior stars. So a glass of water should be an appropriate gift!