From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
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
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Pattern formed from simple shapes. Black version.
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Similar to original, but without gaps in between the arrows. This seamless pattern was created from a rectangular tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
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
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
This one needs to be used in small areas; you can see it repeat.
Source Luca
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton