A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Utilising a bird from s-light and some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq