Continuing the geometric trend, here is one more.
Source Mike Warner
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Prismatic Groovy Concentric Background
Source GDJ
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A repeating background with wood/straw like texture.
Source V. Hartikainen
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background of warped stripes on paper.
Source V. Hartikainen