One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
A seamless texture of a rough concrete surface.
Source V. Hartikainen
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin