Kaleidoscope Prismatic Abstract No Background
Source GDJ
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2
Source GDJ
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Retro Circles Background 5 No Black
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett