Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Abstract Tiled Background Extended 11
Source GDJ
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
Prismatic Snowflakes Pattern No Background
Source GDJ
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Groovy Concentric Background
Source GDJ
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A seamless texture of a rough concrete surface.
Source V. Hartikainen
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Classic 45-degree pattern, light version.
Source Luke McDonald
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten