From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
This is sort of fresh, but still feels a bit old school.
Source Martuchox
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
Adapted from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
A free seamless background with pink spots.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green