This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
A bit of scratched up grayness. Always good.
Source Dmitry
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Seamless Olive Green Web Background Image
Source V. Hartikainen
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background 3
Source GDJ
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin