What are some of your favourite wallpapers?

Feel free to include desktop screenshots if you choose, but I figured it'd be neat to see what others have used as wallpapers. I know many people like to customize their screens. Some like nature photos, some like video games, some have their families, and some simply do colours to make aesthetic desktops. I know Linux users are quite the creative folks, and I imagine those on here are as well. I'll include the image of what my current desktop looks like.

*I think this is an obvious disclaimer considering common sense is still around (depending on who you ask), but please do not post anything that would be against guidelines.

**Also, if you choose to take a screenshot, don't leave something on your desktop you don't want others to see.
For example, if you have a family picture as you're desktop, please don't upload that. I have no doubt your family is full of beautiful, and lovely people but.. This is the internet. Please be cautious.
If you have any files or applications that could be considered personal information or sensitive, don't upload a screenshot. Use the .jpg, .png, whatever.
This is only meant for ideas and a way to show off your own personal piece of art we all can enjoy.

Besides those two disclaimers, I'm looking forward to seeing how others have coordinated their desktops.