The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
CC0 and seamless wellington boot pattern.
Source SliverKnight
This one needs to be used in small areas; you can see it repeat.
Source Luca
A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Embossed lines and squares with subtle highlights.
Source Alex Parker
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy