Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
A version without colours blended together to give a different look.
Source Firkin
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
8 by 8 pixels, and just what the title says.
Source pixilated
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Oh yes, it happened! A pattern in full color.
Source Atle Mo
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen