This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
There are many carbon patterns, but this one is tiny.
Source Designova
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Subtle scratches on a light gray background.
Source Andrey Ovcharov
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim