The idea that Linux is fresh and free for you to do what you want with it. An empty sky with boxes floating around. With my pre-made version I've put one spilling with music, one with binary, one with film rolling out and the word Freedom foremost. I chose metal to convey the security offered by Linux and the sky shows the boundary-free world of open source.
There's a version with the boxes let empty for you to draw anything you want in them.
I also offered the two plain sky versions if you're feeling minimalist.
Either way, feel free to edit and re-distribute, but please give me credit. :) Also, if you could drop me a line showing me what you did with my works, I'd be happy. I love seeing someone else
Thought up during a particularly boring Administration lesson.