This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
8 by 8 pixels, and just what the title says.
Source pixilated
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Background formed from the original with an emboss effect.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin