Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Background formed from the original with an emboss effect
Source GDJ
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Seamless pattern inspired by a drawing on Pixabay. To get the tile this is formed from, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
The original enhanced with one of Inkscapes's filters.
Source Firkin
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin