If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Abstract Ellipses Background Grayscale
Source GDJ
Prismatic Abstract Geometric Background 5
Source GDJ
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso