A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Abstract Tiled Background Extended 6
Source GDJ
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo