From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Prismatic Basic Pattern 2 No Background
Source GDJ
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin