Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Black brick wall pattern. Brick your site up!
Source Alex Parker
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A free pink background pattern.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A seamlessly tileable pink background texture.
Source V. Hartikainen