Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Continuing the geometric trend, here is one more.
Source Mike Warner
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
8 by 8 pixels, and just what the title says.
Source pixilated
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
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
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin