A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
This one needs to be used in small areas; you can see it repeat.
Source Luca
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso