A seamless web texture of "green stone".
Source V. Hartikainen
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Geometric Pattern Background 2 No Black
Source GDJ