A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
A background pattern with a look of rough fabric.
Source V. Hartikainen
The image is a design of blue glass.How about using it as background image?
Source Yamachem
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
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Inspired by a JPG that was uploaded to Pixabay by kokon_art
Source Firkin
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Abstract Tiled Background Extended 8
Source GDJ
Zero CC tileable Laminate wood texture, photographed and made by me. CC0
Source Sojan Janso
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin