This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Background Wall, Art Abstract, Watercolor Vintage style CC0 texture.
Source Ractapopulous
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Prismatic Groovy Concentric Background 5
Source GDJ