Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A bit strange this one, but nice at the same time.
Source Diogo Silva
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
From drawing in 'Musings in Maoriland', Thomas Bracken, 1890.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
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 seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen