A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Background formed from the original with an emboss effect
Source GDJ
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Colour version of the original pattern.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Kaleidoscope Prismatic Abstract No Background
Source GDJ
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
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić