People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
A floral background formed from numerous clones of flower 117.
Source Firkin
Neat little photography icon pattern.
Source Hossam Elbialy
One week and it's Easter already. Thought I would revisit the decorated egg contest at inkscape community: http://forum.inkscapecommunity.com/index.php?topic=118.0
Source Lazur URH
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall