Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Kaleidoscope Prismatic Abstract No Background
Source GDJ
An alternative colour scheme for the original background.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Inspired by a drawing in 'Poems', James Smith, 1881.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso