Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
Prismatic Hypnotic Pattern No Background
Source GDJ
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin