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
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
A white version of the very popular linen pattern.
Source Ant Ekşiler
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
A seamlessly tile-able grunge background image.
Source V. Hartikainen
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin