From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A black tile-able background with paper-like texture.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
There are many carbon patterns, but this one is tiny.
Source Designova
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett