The Earth is Ending. What ONE thing would you save?

So I finally got to see Sy-Fy's new take on the famous Arthur C. Clarke novel: Childhood's End. Never seen the book but had gotten recomendations and would have bought it but then they made a mini series so I figured why not check it out before the book made me tainted against it. XD Weird to say that but tis the way it works these days isn't it?

{SLIGHT SPOILERS BE BELLOW}

Anywho I'll just say one thing caught my attention and made me thing was the fact the protagonist asks the aliens who are witnessing the world's end to save one thing of humanity so they will always be remembered. They choose a hauntingly beautiful violin piece.

So my question to you is "what one thing would you save if the Earth was about to be destroyed?"

What one thing I would save if the Earth was about to be destroyed huh? Well, the Earth of course! Take that aliens!

...But to give a more serious answer xP if I'm choosing for myself, then I would save the electric guitar that was passed down from my granddad as that's my most priceless owned thing. But if I had to choose something for the whole Earth, then I'd like to save a mixtape with recordings of monologues and different types of music. Just a range of super important recordings onto it really, it would be the hypest humanity mixtape ever.

I'd save the internet of course!

The Ultimate wrote:

What one thing I would save if the Earth was about to be destroyed huh? Well, the Earth of course! Take that aliens!

Who said anything about it being aliens this time around. I'm taking the Praetor Suit



Well obviously I'd save myself.

Probably would take a couple records of earths history and its music records and such on some crystal disks type things
http://www.pcworld.com/article/3033071/storage/permanent-superman-crystal-holographic-storage-is-etched-with-the-bible-magna-carta.html

I'd save a USB flash drive of humanity's history, or a history book. I'm not into poetics, so they might as well take something educational.