A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A background tile of dark textile. Made this a long time ago and just now decided to publish it.
Source V. Hartikainen
Prismatic Abstract Geometric Background 5
Source GDJ
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Might not be super subtle, but quite original in its form.
Source Alex Smith
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight