Inspired by a JPG that was uploaded to Pixabay by kokon_art
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Prismatic Basic Pattern 2 No Background
Source GDJ
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Classic 45-degree pattern, light version.
Source Luke McDonald
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
Feel free to download and use it, or see the rest of the dark background patterns that I have made. Anyway, I hope you will find something that you like.
Source V. Hartikainen
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
More bright luxury. This is a bit larger than fancy deboss, and with a bit more noise.
Source Viszt Péter
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
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 smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman