A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Old China with a modern twist, take two.
Source Adam Charlts
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
Just like the black maze, only in light gray. Duh.
Source Peax