Background pattern yellow #2025
Yellow CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
Background pattern 224 (colour 2) #2341
Colorful CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Thick Textured Brown Paper #1070
Paper CC BY-SA 3.0A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
"Honeycomb", Orange Background Pattern #1313
Orange CC BY-SA 3.0The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Decorative divider 246 #2078
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Small Crackle Bright #352
Light CC BY-SA 3.0Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Small Crosses #115
Stripes CC BY-SA 3.0Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Lined Paper@2X #1035
Light CC BY-SA 3.0I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
A dark wool background pattern with diagonal stripes #907
Stripes CC BY-SA 3.0Feel free to download and use it, or see the rest of the dark background patterns that I have made. Anyway, I hope you will find something that you like.
Source V. Hartikainen
Gun Metal@2X #361
Dark CC BY-SA 3.0With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Concrete Wall #77
Wall CC BY-SA 3.0Dark blue concrete wall with some small dust spots.
Source Atle Mo
Background pattern 308 (colour 3) #1870
Colorful CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Office #957
Dark CC BY-SA 3.0I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Background patter 294 #1920
Dark CC 0Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Decorative divider 248 #2074
Dark CC 0From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
Escheresque@2X #778
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Decorative divider 285 #1847
Dark CC 0From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Colorful Stripes Background #992
Stripes CC BY-SA 3.0Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Graphy #350
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Wavy background #2021
Pink CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Cuckoo Footprint #1321
Unknow CC BY-SA 3.0A cute x, if you need that sort of thing.
Source Juan Scrocchi