A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
A bit of scratched up grayness. Always good.
Source Dmitry
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
A free pink background pattern.
Source V. Hartikainen
Psychedelic Geometric Background No Black
Source GDJ
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
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 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin