Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Prismatic Abstract Geometric Background 4
Source GDJ
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Background formed from the original with an emboss effect.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Prismatic Floral Background No Black
Source GDJ
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Remixed from a drawing in 'Kulturgeschichte der Deutschen im Mittelalter' Franz von Loeher, 1891. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin