This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
A seamlessly repeating background pattern of wood. The image is procedurally generated, and, I think, it's turned out quite well.
Source V. Hartikainen
Subtle scratches on a light gray background.
Source Andrey Ovcharov
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless Light Background Texture.
Source V. Hartikainen
Otis Ray Redding was an American soul singer-songwriter, record producer, arranger, and talent scout. So you know.
Source Thomas Myrman
The image depicts polka dot seamless pattern.
Source Yamachem
Abstract Tiled Background Extended 12
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Geometric Pattern Background 2
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin