This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz