A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin