Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
I’m not going to lie – if you submit something with the words Norwegian and Rose in it, it’s likely I’ll publish it.
Source Fredrik Scheide
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A comeback for you: the popular Escheresque, now in black.
Source Patten
Prismatic Abstract Line Art Pattern Background
Source GDJ
Sharp pixel pattern, just like the good old days.
Source Paridhi
A bit of scratched up grayness. Always good.
Source Dmitry
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
Prismatic Rounded Squares Grid 3 No Background
Source GDJ