Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Fix side and a seamless pattern formed from circles.
Source SliverKnight
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Alternative colour scheme. 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
The original enhanced with some gradients.
Source Firkin
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin