Remixed from a drawing in 'Jezebel's Daughter', Wilkie Collins 1880
Source Firkin
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
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
Number five from the same submitter, makes my job easy.
Source Dima Shiper
Prismatic Floral Background No Black
Source GDJ
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
Fix and cc0 to get the tile this is based on.
Source SliverKnight
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Retro Circles Background 8 No Black
Source GDJ
This background has abstract texture with some similarities to wood.
Source V. Hartikainen