Sort of reminds me of those old house wallpapers.
Source Tish
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
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
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
This was formed by distorting an image of a background on Pixabay.
Source Firkin