Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Prismatic Groovy Concentric Background 2
Source GDJ
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Prismatic Abstract Geometric Background 2 No Black
Source GDJ
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Might not be super subtle, but quite original in its form.
Source Alex Smith
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Prismatic Abstract Geometric Background 4 No Black
Source GDJ