The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A comeback for you: the popular Escheresque, now in black.
Source Patten
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Prismatic Groovy Concentric Background 2
Source GDJ
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Prismatic Floral Background No Black
Source GDJ
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
Looks like an old rug or a computer chip.
Source Patutin Sergey
Green Web Background, Seamless tile.
Source V. Hartikainen
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen