To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
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
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A cute x, if you need that sort of thing.
Source Juan Scrocchi
A comeback for you: the popular Escheresque, now in black.
Source Patten
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten