Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A background tile of dark textile. Made this a long time ago and just now decided to publish it.
Source V. Hartikainen
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
A seamless pattern created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Alternative colour scheme for the original floral pattern.
Source Firkin
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
A seamless pale yellow paper background with a pattern of animal tracks.
Source V. Hartikainen
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
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
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
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
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
A cute x, if you need that sort of thing.
Source Juan Scrocchi