Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
A background tile of dark textile. Made this a long time ago and just now decided to publish it.
Source V. Hartikainen
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Prismatic Geometric Pattern Background No Black
Source GDJ
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A lot of people like the icon patterns, so here’s one for your restaurant blog.
Source Andrijana Jarnjak
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
One more sharp little tile for you. Subtle circles this time.
Source Blunia
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A seamless background pattern with impressed gray dots.
Source V. Hartikainen