You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
An alternative colour scheme to the original seamless pattern.
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen