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
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
White circles connecting on a light gray background.
Source Mark Collins
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Lovely pattern with splattered vintage speckles.
Source David Pomfret
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Seamless Prismatic Geometric Pattern With Background
Source GDJ
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin