I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
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
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Prismatic Groovy Concentric Background No Black
Source GDJ
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Prismatic Geometric Pattern Background
Source GDJ
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin