A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
A browner version of the original weathered fence texture.
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne