A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Prismatic Triangular Background Design Mark II 5
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
From a drawing in 'Handbook of the excursions proposed to be made by the Lincoln Diocesan Architectural Society, on the 27th and 28th of May, 1857', Edward Trollope, 1857.
Source Firkin
Original minus the background
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
This one has rusty dark brown texture.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin