From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Fix side and a seamless pattern formed from circles.
Source SliverKnight
Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.
Source Firkin
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Retro Circles Background 7 No Black
Source GDJ
This white background pattern has a seamless grunge style texture. Here's a white grunge style background pattern. Use it as a tiled background image on web sites or for other purposes.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
A white version of the very popular linen pattern.
Source Ant Ekşiler
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen