A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Neat little photography icon pattern.
Source Hossam Elbialy
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
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
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen