The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
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
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard