The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
An alternative colour scheme to the original seamless pattern.
Source Firkin
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Prismatic Polyskelion Pattern No Background
Source GDJ
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett