From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Original minus the background
Source Firkin
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio