Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Abstract Ellipses Background Grayscale
Source GDJ
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
A white version of the very popular linen pattern.
Source Ant Ekşiler
Classic 45-degree pattern, light version.
Source Luke McDonald
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Polka Dots Mark II No Background
Source GDJ
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968