A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
A seamless texture of a rough concrete surface.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Background formed from the original with an emboss effect
Source GDJ
This one needs to be used in small areas; you can see it repeat.
Source Luca
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
A white version of the very popular linen pattern.
Source Ant Ekşiler
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
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
This was formed by distorting an image of a background on Pixabay.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Prismatic Hypnotic Pattern No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Here is a new seamless wood texture for using as blog or website backgrounds.
Source V. Hartikainen