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
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
White handmade paper pattern with small bumps.
Source Marquis
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
Prismatic Groovy Concentric Background 3
Source GDJ
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin