A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
A white version of the very popular linen pattern.
Source Ant Ekşiler
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Prismatic Abstract Geometric Background 2
Source GDJ
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.