Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A black tile-able background with paper-like texture.
Source V. Hartikainen
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
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Zero CC bark from fur tree tileable texture, photographed and made by me. CC0
Source Sojan Janso
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Light and tiny, just the way you like it.
Source Rohit Arun Rao
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon