The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
Might not be super subtle, but quite original in its form.
Source Alex Smith
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
Prismatic Polyskelion Pattern No Background
Source GDJ
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen