In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Embossed lines and squares with subtle highlights.
Source Alex Parker
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Colour version of the original pattern.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin