Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
Prismatic Curved Diamond Pattern No Background
Source GDJ
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman