Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Prismatic Groovy Concentric Background 5
Source GDJ
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
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Seamless Background For Websites. It has a texture similar to cork-board.
Source V. Hartikainen
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors