Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
A seamlessly tile-able grunge background image.
Source V. Hartikainen
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin