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
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
The original enhanced with some gradients.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Oh yes, it happened! A pattern in full color.
Source Atle Mo
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Light and tiny, just the way you like it.
Source Rohit Arun Rao
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado