Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Tiny circle waves, almost like the ocean.
Source Sagive
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin