You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
A cute x, if you need that sort of thing.
Source Juan Scrocchi
Might not be super subtle, but quite original in its form.
Source Alex Smith
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight