The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin