Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Derived from a corner decoration itself found as a jpg on Pixabay.
Source Firkin
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
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
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green