Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
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
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
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
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker