From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
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
A new one called white wall, not by me this time.
Source Yuji Honzawa
Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
This one is amazing, truly original. Go use it!
Source Viahorizon
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Remixed 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 tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin