A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen