A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin