Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Seamless Light Background Texture.
Source V. Hartikainen
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
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
Light and tiny, just the way you like it.
Source Rohit Arun Rao
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin