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 simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
Prismatic Curved Diamond Pattern No Background
Source GDJ
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin