Might not be super subtle, but quite original in its form.
Source Alex Smith
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The original enhanced with one of Inkscapes's filters.
Source Firkin
Colorful Floral Background No Black
Source GDJ
Continuing the geometric trend, here is one more.
Source Mike Warner
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
This is sort of fresh, but still feels a bit old school.
Source Martuchox
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen