Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Colorful Floral Background 3 No Black
Source GDJ
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin