A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
A comeback for you: the popular Escheresque, now in black.
Source Patten
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
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 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
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
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ