This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A seamless background of warped stripes on paper.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin