The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
The base gradient edited so now more details are rendered.
Source Lazur URH
A version without colours blended together to give a different look.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
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
You guessed it – looks a bit like cloth.
Source Peax Webdesign
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen