Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Prismatic Hexagonalist Pattern No Background
Source GDJ
Prismatic Snowflakes Pattern No Background
Source GDJ
This one needs to be used in small areas; you can see it repeat.
Source Luca
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
There are many carbon patterns, but this one is tiny.
Source Designova
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo