Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Prismatic Abstract Geometric Background 2
Source GDJ
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A bit of scratched up grayness. Always good.
Source Dmitry
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
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
Prismatic Groovy Concentric Background 3
Source GDJ
Prismatic Groovy Concentric Background 3
Source GDJ
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen