This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A seamless pattern formed from background pattern 102
Source Firkin
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
A seamlessly tileable pink background texture.
Source V. Hartikainen
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten