This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Alternative colour scheme for the original floral pattern.
Source Firkin
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim