A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
White handmade paper pattern with small bumps.
Source Marquis
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Background formed from the original with an emboss effect
Source GDJ
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton