Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
Alternative colour scheme for the original floral pattern.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Prismatic Groovy Concentric Background
Source GDJ