You guessed it – looks a bit like cloth.
Source Peax Webdesign
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
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
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
It’s big, it’s gradient—and it’s square.
Source Brankic1979
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
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
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
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