Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Neat little photography icon pattern.
Source Hossam Elbialy
Colour version of the original pattern.
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
Just like the black maze, only in light gray. Duh.
Source Peax
This one needs to be used in small areas; you can see it repeat.
Source Luca
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
A free pink background pattern.
Source V. Hartikainen
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf