To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Oh yes, it happened! A pattern in full color.
Source Atle Mo
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Colour version of the original pattern.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Remixed from a drawing in 'Incidents on a Journey through Nubia to Darfoor', F. Ensor, 1891.
Source Firkin
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
This seamless web background texture looks like gray stone. It's great for using as a background image on web pages, or on some of their elements. Anyway, I hope you will find use for it.
Source V. Hartikainen
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić