From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin