A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
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
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
Colour version of the original pattern.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Groovy Concentric Background No Black
Source GDJ
Continuing the geometric trend, here is one more.
Source Mike Warner
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin