This is a hot one. Small, sharp and unique.
Source GraphicsWall
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Looks like an old wall. I guess that’s it then?
Source Viahorizon
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'Friend or Fortune? The story of a strange year', Robert Overton, 1897.
Source Firkin
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
If you don’t like cream and pixels, you’re in the wrong place.
Source Mizanur Rahman
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
A seamless design of flowers remixed from a jpg on Pixabay by Prawny.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett