A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
The name is totally random, but hey, it sounds good.
Source Atle Mo
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
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 pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
There are many carbon patterns, but this one is tiny.
Source Designova
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Used a cherry by doctormo to make this seamless pattern
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner