A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Prismatic Floral Background No Black
Source GDJ
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
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
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
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
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Sharp but soft triangles in light shades of gray.
Source Pixeden
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Oh yes, it happened! A pattern in full color.
Source Atle Mo
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo