This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
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
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
A free seamless background with pink spots.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry