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
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Prismatic Floral Background No Black
Source GDJ
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Green Background Pattern
Source V. Hartikainen
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
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
Here is a new seamless wood texture for using as blog or website backgrounds.
Source V. Hartikainen
Prismatic Geometric Pattern Background No Black
Source GDJ
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel