From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Spice up your next school project with this icon background.
Source Swetha
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Lovely pattern with some good-looking non-random noise lines.
Source Zucx