From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'Incidents on a Journey through Nubia to Darfoor', F. Ensor, 1891.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Prismatic Abstract Geometric Background 3
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Prismatic Geometric Pattern Background No Black
Source GDJ
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Might not be super subtle, but quite original in its form.
Source Alex Smith
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin