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
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Prismatic Hexagonalism Pattern No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Curved Diamond Pattern No Background
Source GDJ
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Prismatic Polyskelion Pattern No Background
Source GDJ
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin