Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Element of beach pattern with background.
Source Rones
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
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
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Prismatic Abstract Geometric Background 5
Source GDJ
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin