This was formed by distorting an image of a background on Pixabay.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A seamless pattern formed from background pattern 102
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
The tile can be had by selecting the rectangle in Inkscape and using shift+alt+i. Remixed from a drawing in 'Flowers of Song', Frederick Weatherly, 1895.
Source Firkin
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
A bit of scratched up grayness. Always good.
Source Dmitry
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
A new one called white wall, not by me this time.
Source Yuji Honzawa
Sometimes you just need the simplest thing.
Source Fabricio
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin