A black tile-able background with paper-like texture.
Source V. Hartikainen
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
The base gradient edited so now more details are rendered.
Source Lazur URH
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Classic vertical lines, in all its subtlety.
Source Cody L
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
This was formed by distorting an image of a background on Pixabay.
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin