Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
An alternative colour scheme to the original seamless pattern.
Source Firkin
A repeating background with a look of paper. I have added some changes to PatCreator. Now you can share your designs by submitting them to a new gallery section. Start by clicking Edit with PatCreator above.
Source V. Hartikainen
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Abstract Background Design No Black
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Prismatic Groovy Concentric Background
Source GDJ
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
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
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
A white version of the very popular linen pattern.
Source Ant Ekşiler
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars