Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A bit strange this one, but nice at the same time.
Source Diogo Silva