Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
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
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A seamless background texture of old cardboard.
Source V. Hartikainen
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
This is the remix of "Strawberry Pattern Background" uploaded by "GDJ". Thanks. I realigned strawberries so as to get seamless and changed the BG color.
Source Yamachem
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Colourful background achieved with gradient fills.
Source Firkin
Retro Circles Background 5 No Black
Source GDJ
A browner version of the original weathered fence texture.
Source Firkin
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
"Beige Stone", Tileable Texture.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen