A bit strange this one, but nice at the same time.
Source Diogo Silva
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
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
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Number five from the same submitter, makes my job easy.
Source Dima Shiper
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Looks like an old rug or a computer chip.
Source Patutin Sergey
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin