Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
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
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
More in the paper realm, this time with fibers.
Source Jorge Fuentes
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Gold Triangular Seamless Pattern No Background
Source GDJ
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
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
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Prismatic Abstract Geometric Background 5
Source GDJ
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Prismatic Groovy Concentric Background 5
Source GDJ
This one needs to be used in small areas; you can see it repeat.
Source Luca
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin