A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin