From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
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
Prismatic Groovy Concentric Background 5
Source GDJ
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Prismatic Hexagonalism Pattern No Background
Source GDJ
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
8 by 8 pixels, and just what the title says.
Source pixilated
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Line Art Pattern Background
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
This white background pattern has a seamless grunge style texture. Here's a white grunge style background pattern. Use it as a tiled background image on web sites or for other purposes.
Source V. Hartikainen
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen