As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Alternative colour scheme for the original floral pattern.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Inspired by a JPG that was uploaded to Pixabay by kokon_art
Source Firkin
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
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
This one has rusty dark brown texture.
Source V. Hartikainen
A seamless texture of a rough concrete surface.
Source V. Hartikainen
A bit of scratched up grayness. Always good.
Source Dmitry
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin