A white version of the very popular linen pattern.
Source Ant Ekşiler
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Prismatic Geometric Pattern Background 2
Source GDJ
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
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
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
A comeback for you: the popular Escheresque, now in black.
Source Patten
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo