People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
This could be a hippy vintage wallpaper.
Source Tileable Patterns
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Abstract Geometric Background 2
Source GDJ
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Prismatic Abstract Background Design No Black
Source GDJ
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Looks like an old wall. I guess that’s it then?
Source Viahorizon