From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Tiny circle waves, almost like the ocean.
Source Sagive
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
The image is a design of blue glass.How about using it as background image?
Source Yamachem
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin