A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
Subtle scratches on a light gray background.
Source Andrey Ovcharov
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
An alternative colour scheme to the original seamless pattern.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin