Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Alternative colour scheme for the original floral pattern.
Source Firkin
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
This is the remix of "Background pattern 115" uploaded by "Firkin".Thanks.
Source Yamachem
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez