Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Geometric triangles seem to be quite hot these days.
Source Pixeden
Prismatic Geometric Pattern Background No Black
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 2
Source GDJ
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
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