The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
One more sharp little tile for you. Subtle circles this time.
Source Blunia
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
A free seamless background with pink spots.
Source V. Hartikainen
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin