The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
One week and it's Easter already. Thought I would revisit the decorated egg contest at inkscape community: http://forum.inkscapecommunity.com/index.php?topic=118.0
Source Lazur URH
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Prismatic Groovy Concentric Background 5
Source GDJ
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
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
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward