Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Kaleidoscope Prismatic Abstract No Background
Source GDJ
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
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin