From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Abstract Tiled Background Extended 6
Source GDJ
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc