From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Prismatic Abstract Geometric Background 4
Source GDJ
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Almost like little fish shells, or dragon skin.
Source Graphiste
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Prismatic Basic Pattern 2 No Background
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A free pink background pattern.
Source V. Hartikainen
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ