From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
8 by 8 pixels, and just what the title says.
Source pixilated
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
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
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Might not be super subtle, but quite original in its form.
Source Alex Smith
This one is amazing, truly original. Go use it!
Source Viahorizon
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin