Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
An alternative colour scheme to the original seamless pattern.
Source Firkin
From a drawing in 'Friend or Fortune? The story of a strange year', Robert Overton, 1897.
Source Firkin
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
The classic notebook paper with horizontal stripes.
Source Are Sundnes
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
This is a hot one. Small, sharp and unique.
Source GraphicsWall
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
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
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.
Source JayNick
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ