8 by 8 pixels, and just what the title says.
Source pixilated
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Lovely pattern with splattered vintage speckles.
Source David Pomfret
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward