A light brushed aluminum pattern for your pleasure.
Source Tim Ward
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A repeating background with seamless texture of stone. There haven't been any stone-like backgrounds for a while, so I have decided to create one more. The rest can be found in the appropriate category.
Source V. Hartikainen
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A free seamless background with pink spots.
Source V. Hartikainen
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
CC0 and seamless wellington boot pattern.
Source SliverKnight
Geometric triangles seem to be quite hot these days.
Source Pixeden
Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin