Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
White handmade paper pattern with small bumps.
Source Marquis
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
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
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Embossed lines and squares with subtle highlights.
Source Alex Parker
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo