A heavy hitter at 400x400px, but lovely still.
Source Breezi
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i
Source Firkin
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Might not be super subtle, but quite original in its form.
Source Alex Smith