A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
Colour version of the original pattern.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
A free pink background pattern.
Source V. Hartikainen
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
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
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Embossed lines and squares with subtle highlights.
Source Alex Parker
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Colour version of the original seamless pattern.
Source Firkin