A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'From Snowdon to the Sea. Striking stories of North and South Wales', Marie Trevelyan, 1895.
Source Firkin
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Prismatic Triangular Background Design Mark II 5
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin