This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Prismatic Hexagonalist Pattern No Background
Source GDJ