Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
A seamless background texture of old cardboard.
Source V. Hartikainen
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Just like the black maze, only in light gray. Duh.
Source Peax
An alternative colour scheme for the original seamless texture formed from an image on Pixabay.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Colour version of the original seamless pattern.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen