A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A seamless background tile of aged paper with shabby look.
Source V. Hartikainen
Colour version of the original pattern.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless background of warped stripes on paper.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.
Source Firkin
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns