Sort of reminds me of those old house wallpapers.
Source Tish
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
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
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A black tile-able background with paper-like texture.
Source V. Hartikainen
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH