Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
A floral background formed from numerous clones of flower 117.
Source Firkin
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin