The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Classic vertical lines, in all its subtlety.
Source Cody L
Spice up your next school project with this icon background.
Source Swetha
Prismatic Chevrons Pattern 5 With Background
Source GDJ
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Zero CC tileable pine bark texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Abstract Geometric Background 3
Source GDJ
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
Element of beach pattern with background.
Source Rones