A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
The original enhanced with some gradients.
Source Firkin
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Groovy Concentric Background 3
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo