You may use it as is, or modify it as you like.
Source V. Hartikainen
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Prismatic Abstract Line Art Pattern Background
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Background formed from the original with an emboss effect.
Source Firkin
An alternative colour scheme for the original background.
Source Firkin
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin