A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
The original enhanced with some gradients.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
A free seamless texture of reptile skin colored in a dark brown color. As always, you may use it as a repeated background image in your web design works, or for any other purposes.
Source V. Hartikainen
An alternative colour scheme to the original seamless pattern.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Prismatic Abstract Geometric Background 4
Source GDJ
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
Prismatic Hexagonalism Pattern No Background
Source GDJ
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim