The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Lovely pattern with splattered vintage speckles.
Source David Pomfret
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin