Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Seamless pattern formed from a tile that 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
Lovely pattern with splattered vintage speckles.
Source David Pomfret
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud