Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
Prismatic Hypnotic Pattern No Background
Source GDJ
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Original minus the background
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
An alternative colour scheme to the original seamless pattern.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Remixed from a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Almost like little fish shells, or dragon skin.
Source Graphiste
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin