Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Zero CC tileable yellow craft paper; scanned and made by me. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
A comeback for you: the popular Escheresque, now in black.
Source Patten
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Background formed from the original with an emboss effect
Source GDJ