Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
The image is a design of blue glass.How about using it as background image?
Source Yamachem
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Colour version of the original pattern.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Abstract Tiled Background Extended 10
Source GDJ
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin