Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
A bit strange this one, but nice at the same time.
Source Diogo Silva
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.
Source Max Rudberg