Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
An alternative colour scheme to the original seamless pattern.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin