From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Triangular Background Design Mark II 5
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
8 by 8 pixels, and just what the title says.
Source pixilated
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien