Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A repeating background with wood/straw like texture.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Colour version of the original pattern.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
A version without colours blended together to give a different look.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
This one needs to be used in small areas; you can see it repeat.
Source Luca
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Might not be super subtle, but quite original in its form.
Source Alex Smith
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Abstract Ellipses Background Grayscale
Source GDJ
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
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
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Abstract Tiled Background Extended 11
Source GDJ
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo