From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
Prismatic Abstract Geometric Background 5
Source GDJ
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Alternative colour scheme for the original floral pattern.
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
This was formed by distorting an image of a background on Pixabay.
Source Firkin
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979