People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Embossed lines and squares with subtle highlights.
Source Alex Parker
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Subtle scratches on a light gray background.
Source Andrey Ovcharov
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
One week and it's Easter already. Thought I would revisit the decorated egg contest at inkscape community: http://forum.inkscapecommunity.com/index.php?topic=118.0
Source Lazur URH
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
This is the remix of an OCAL clipart called "Art Nouveau ornament" uploaded by "microcosme".Thanks.This is a seamless pattern of an Art Nouveau ornament.
Source Yamachem
Pattern formed from simple shapes. Black version.
Source Firkin
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ