Alternative colour scheme. 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
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
The image depicts a tiled seamless pattern.The tile represents four leaves aligned every 90 ° , which may look like a bird or a dragon .The original leaf design is from a Japanese old book.
Source Yamachem
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
Lovely pattern with splattered vintage speckles.
Source David Pomfret
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Psychedelic Geometric Background No Black
Source GDJ
A bit of scratched up grayness. Always good.
Source Dmitry
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
An alternative colour scheme for the original background.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A black tile-able background with paper-like texture.
Source V. Hartikainen
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin