After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
There are many carbon patterns, but this one is tiny.
Source Designova
The original enhanced with some gradients.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Prismatic Groovy Concentric Background 2
Source GDJ
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
This is a seamless pattern of a woody texture.The original image is here:https://pixabay.com/ja/users/ClassicallyPrinted-1302233/
Source Yamachem
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler