From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
A bit strange this one, but nice at the same time.
Source Diogo Silva
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Background formed from the original with an emboss effect
Source GDJ
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Sharp pixel pattern, just like the good old days.
Source Paridhi
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra