The original enhanced with some gradients.
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin