A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Prismatic Basic Pattern 2 No Background
Source GDJ
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
A free seamless background pattern for use on websites.
Source V. Hartikainen
Prismatic Curved Diamond Pattern No Background
Source GDJ
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso