Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
This is a remix of "geometrical pattern 01".
Source Yamachem
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Abstract Tiled Background Extended 11
Source GDJ
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
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
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo