This one is amazing, truly original. Go use it!
Source Viahorizon
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 raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
A cute x, if you need that sort of thing.
Source Juan Scrocchi
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Prismatic Geometric Pattern Background
Source GDJ
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos