From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Geometric triangles seem to be quite hot these days.
Source Pixeden
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
A seamlessly tile-able grunge background image.
Source V. Hartikainen
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Sharp pixel pattern, just like the good old days.
Source Paridhi
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
The original enhanced with some gradients.
Source Firkin