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
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A repeating background with wood/straw like texture.
Source V. Hartikainen
Number five from the same submitter, makes my job easy.
Source Dima Shiper
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A blue background wallpaper for websites. It has a seamless texture with vertical stripes. It looks quite nice not only when using as a tiled background on websites, but also on computer desktops.
Source V. Hartikainen
Black brick wall pattern. Brick your site up!
Source Alex Parker
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin