Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
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 repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
From an image on opengameart.org shared by rubberduck.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin