A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
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
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Sharp pixel pattern, just like the good old days.
Source Paridhi
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
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Alternative colour scheme for the original floral pattern.
Source Firkin
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Prismatic Snowflakes Pattern No Background
Source GDJ
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Green Web Background, Seamless tile.
Source V. Hartikainen