Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Fix side and a seamless pattern formed from circles.
Source SliverKnight
Seamless pattern inspired by a drawing on Pixabay. To get the tile this is formed from, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A background pattern with a look of rough fabric.
Source V. Hartikainen
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Old China with a modern twist, take two.
Source Adam Charlts