The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Alternative colour scheme for the original floral pattern.
Source Firkin
Prismatic Abstract Geometric Background 2
Source GDJ
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
Green Web Background, Seamless tile.
Source V. Hartikainen
A heavy hitter at 400x400px, but lovely still.
Source Breezi
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf