A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Background pattern originally a PNG drawn in Paint.net
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prismatic Groovy Concentric Background 5
Source GDJ
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
Prismatic Groovy Concentric Background 4
Source GDJ