The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
It’s big, it’s gradient—and it’s square.
Source Brankic1979
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Inspired by a JPG that was uploaded to Pixabay by kokon_art
Source Firkin
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
8 by 8 pixels, and just what the title says.
Source pixilated
Abstract Tiled Background Extended 12
Source GDJ
Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor