Remixed from a vector adapted from a jpg on Pixabay. The tile this is constructed from can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A cute x, if you need that sort of thing.
Source Juan Scrocchi
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Might not be super subtle, but quite original in its form.
Source Alex Smith
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
8 by 8 pixels, and just what the title says.
Source pixilated
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Prismatic Curved Diamond Pattern No Background
Source GDJ