The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
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
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
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
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Geometric Pattern Background No Black
Source GDJ
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Element of beach pattern with background.
Source Rones
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars