Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
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
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
A new one called white wall, not by me this time.
Source Yuji Honzawa
From an image on opengameart.org shared by rubberduck.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin