I've uploaded (almost) every wallpaper I've used in the past year on every computer I have. At least i think that's most of them. I change wallpapers often and I usually have three or four at a time set to change automatically every three or four days. It took a while but here you guys go:

Tigmawallpapers - Imgur

Also I couldn't find the totoro wallpaper I had but I'll post it later if I find it.

I usually prefer dark wallpapers so I don't get blinded if I ever wake up in the middle of the night and decide to check my email, but I always have at least one monitor with a somewhat bright wallpaper so I don't stub my toe while I walk around my tool-cluttered room in the dark.