Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
"Beige Stone", Tileable Texture.
Source V. Hartikainen
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Spice up your next school project with this icon background.
Source Swetha
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
A seamless texture of black leather. I think it will look best when used in headers, footers or sidebars.
Source V. Hartikainen
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
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso