A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS