Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Old China with a modern twist, take two.
Source Adam Charlts
Prismatic Geometric Pattern Background 2
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Prismatic Groovy Concentric Background 2
Source GDJ
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
This background image is great for using in web design or graphic design projects. And don't forget to visit the homepage. I frequently update this resource with fresh tileable backgrounds.
Source V. Hartikainen
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav