Embossed lines and squares with subtle highlights.
Source Alex Parker
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
Just like the black maze, only in light gray. Duh.
Source Peax
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin