Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
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
Colorful Floral Background No Black
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
CC0 and seamless wellington boot pattern.
Source SliverKnight
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin