From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
Remixed from an image that was uploaded to Pixabay by CatherineClennan
Source Firkin
Utilising a bird from s-light and some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Might not be super subtle, but quite original in its form.
Source Alex Smith
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin