This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
Sometimes you just need the simplest thing.
Source Fabricio
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Psychedelic Geometric Background No Black
Source GDJ
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav