People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Almost like little fish shells, or dragon skin.
Source Graphiste
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Black brick wall pattern. Brick your site up!
Source Alex Parker
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
This is the remix of an OCAL clipart called "Art Nouveau ornament" uploaded by "microcosme".Thanks.This is a seamless pattern of an Art Nouveau ornament.
Source Yamachem
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Classic vertical lines, in all its subtlety.
Source Cody L
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
An alternative colour scheme for the original background.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin