Might not be super subtle, but quite original in its form.
Source Alex Smith
Classic vertical lines, in all its subtlety.
Source Cody L
Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
A nice and simple white rotated tile pattern.
Source Another One
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
A background pattern with a look of rough fabric.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin