The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
White circles connecting on a light gray background.
Source Mark Collins
Retro Circles Background 5 No Black
Source GDJ
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
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
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
A comeback for you: the popular Escheresque, now in black.
Source Patten
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
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
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin