Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Derived from a JPG that was uploaded to Pixabay by ractapopulous
Source Firkin
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Seamless Background For Websites. It has a texture similar to cork-board.
Source V. Hartikainen
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A seamless texture of a rough concrete surface.
Source V. Hartikainen
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin