Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
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
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Prismatic Geometric Pattern Background No Black
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
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
A free seamless background with pink spots.
Source V. Hartikainen
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin