Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Similar to original, but without gaps in between the arrows. This seamless pattern was created from a rectangular tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
A free seamless background with pink spots.
Source V. Hartikainen
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Sometimes you just need the simplest thing.
Source Fabricio
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
No, not the band but the pattern. Simple squares in gray tones, of course.
Source Atle Mo
Background pattern originally a PNG drawn in Paint.net
Source Firkin
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin