After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
You may use it as is, or modify it as you like.
Source V. Hartikainen
Retro Circles Background 8 No Black
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin