Zero CC bark from fur tree tileable texture, photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
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
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
Retro Circles Background 8 No Black
Source GDJ
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn