I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Abstract Tiled Background Extended 10
Source GDJ
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin