An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
Someone was asking about how to achieve a fur pattern at #inkscape irc so tried to make a filter on it. Flood filled fractal noises rigged together. May someone find a good use for these.
Source Lazur URH
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Prismatic Triangular Background Design Mark II 5
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo