Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A new take on the black linen pattern. Softer this time.
Source Atle Mo
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Prismatic Abstract Geometric Background 3
Source GDJ
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Looks like an old wall. I guess that’s it then?
Source Viahorizon