This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
A new one called white wall, not by me this time.
Source Yuji Honzawa
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Tiny circle waves, almost like the ocean.
Source Sagive
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Colour version of the original pattern.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A dark striped seamless pattern suitable for use as a background on websites.
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
Continuing the geometric trend, here is one more.
Source Mike Warner
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
From a drawing in 'Line and form', Walter Crane, 1914.
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
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2 No Black
Source GDJ