White circles connecting on a light gray background.
Source Mark Collins
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
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 dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Prismatic Abstract Line Art Pattern Background
Source GDJ
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green