This was formed by distorting an image of a background on Pixabay.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Derived from a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
This one needs to be used in small areas; you can see it repeat.
Source Luca
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo