A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
An alternative colour scheme for the original seamless texture formed from an image on Pixabay.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Prismatic Groovy Concentric Background
Source GDJ
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
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