ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Kaleidoscope Prismatic Abstract No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless Olive Green Web Background Image
Source V. Hartikainen
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Classic 45-degree pattern, light version.
Source Luke McDonald
Classic vertical lines, in all its subtlety.
Source Cody L
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective