This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A light gray wall or floor (you decide) of concrete.
Source Atle Mo