With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
Prismatic Polyskelion Pattern No Background
Source GDJ
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Might not be super subtle, but quite original in its form.
Source Alex Smith