A seamless web texture of "green stone".
Source V. Hartikainen
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.
Source Firkin
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Prismatic Geometric Pattern Background 2
Source GDJ
A version without colours blended together to give a different look.
Source Firkin