I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
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
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
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
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
An alternative colour scheme for the original background.
Source Firkin
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO