The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
A repeating graphic with ancient pattern. I came up with this name/title at last minute, so you may find that there is very little of ancientness in this pattern after all.
Source V. Hartikainen
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Colorful Floral Background No Black
Source GDJ
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Abstract Tiled Background Extended 11
Source GDJ
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin